Tag Archives: outboard gas engine

TMM 700 heavy duty transom motor mount

The Transom Motor Mount (TMM) 700 is suitable for both 20″ (long) and 15″ (short) outboard motor shafts.
You just flip it upside down and relocate it, and the vertical mounting plate will be at the height that you need it to be for your motor.
We recommend using 20″ (long) shaft motors, since they can be mounted right at the rear end of the cockpit, and not a few inches behind it. When the motor is closer to you, it’s easier for you to start it and access its controls, and it also makes easier for you to steer the boat.

  • Price:  $168.
  • Shipping:

No extra charge when shipped together with a Wavewalk™ boat.
When shipped separately: $20 S&H in the continental US (48 states).
When shipped separately: $25 S&H to Canada and Alaska.


W700 transom motor mount for fishing boat

Materials and Construction

The TMM is made from 3/4″ thick Medium Density Overlay (MDO), and coated with polyurethane. MDO is a composite product made from wood and polymer resin (plastic), and we’ve been using it successfully since 2012 in saddle brackets, and since 2014 in motor mounts .

The parts from which the TMM 700 is made are cut with a computerized router for maximal precision, best fit, and optimal strength. They are assembled and glued together with waterproof adhesive. The tab-and-slot technique and ‘caisson’ design applied in this product provide it with additional strength.

There is no need to paint this motor mount, but in case you want to, it can be painted with special paint for outdoor plastic, as regular paint doesn’t adhere to its surface.

The bolts, washers and nuts used in this motor mount are made from zinc plated steel.

Dimensions and Technical Specifications

  • Width:  23.5″ (60 cm)
  • Height:  6″ (14 cm)
  • Depth:  6.5″ (16.5 cm)
  • Weight:  4 lbs (1.8 kg)
  • Horsepower Compliance:   We do not recommended using this motor mount with outboard motors stronger than 5 hp. Failing to do so is hazardous, and could result in serious accidents.


What makes the TMM more suitable for powerful motors than the TMM 20-15?

Both motor mounts are using the same dual-use design, but the TMM 700 is built especially for more powerful motors. In the TMM 700 we doubled the width of the vertical mounting plate, and made it 1/2″ higher so it would fit bigger clamp brackets. We also increased the size of its tabs, and made the mount’s attachment knobs bigger so they would grip a bigger surface.
In addition, we made the horizontal plates of the TMM 700 broader, and designed them to fit the straight ends of the cockpit of boats from the new 700 series.


New rigging and fish pics

By Ray Schwertner

Here are some rigging pictures (latest) of my boat. Note how the console with the seat can be easily lifted out and replaced in one of three forward or rearward positions. You can mount your stuff on it. The “u” brackets made this possible.

I show the pivot up and down transducer in the rear and the screen on the front motor console/step combination.

The PVC rod holders work great especially for bass fishing where you need them handy, but not in the way. A lot easier to reach than the rear mount standard holders..which are still used on occasion to hold the anchor or a rod. (When you put a rod in it, it can get hung on tree limbs or sometimes it would hit it with my casting rod.

I discarded the anchor trolley from my early days. You can see a wind up cleat on the console that goes to a pulley. If I need to adjust for wind direction, I just hang the rope over a cleat on the from, or back or side.

I think you could offer a drop in console with a seat option and maybe place to mount other items the user may want.

The trolley really works great… as you can see it fits inside the saddle space. You just raise up the W, push it under to catch the first or second rib, then raise it a little more an push it forward to get the second upright positioned on a rib further to the front. I tried to use a flexible design that you could fold, but to hard and too unstable. As you can see my trolley is fixed and strong enough to support the weight of the W and it accessories.

I think a customized trolley similar to this design would be a great accessory for you to sell, in addition to the console and maybe and electric motor mount. I just don’t get the folks who are powered up with gas outboard. But to each his own…

Finally the rope I am holding just comes out of a hole I drilled to keep it off the deck… My hooks have a way of finding the ropes that are nearby. That causes a lot of lost fishing time.

This fish are two black crappie. One other one got off before I got him welcomed aboard. Caught them on a 3/8 oz lipless crank bait called “Diamond Dust” from Academy spots. Usually a good bass lure but I have been catching crappie like these recently.



Black Crappie


DIY horizontal rod holder


DIY horizontal rod holder
Seat backrest in upward position
Seat backrest folded down


Front mount for trolling motor
Rigged fishing kayak with front mounted trolling motor – top front view
Front mounted trolling motor
Tackle box on deck
Tackle box on deck


Fish finder transducer in high position
Fish finder transducer in low position












More DIY outfitting projects and fishing reports from Ray »

Wavewalk outfitted for crabbing, fishing and hunting

By Scott Harbinson


I bought my Wavewalk from someone who sold his in Upstate NY. I certainly appreciated how easy it was to car top on the 320 mile trip back home.

The previous owner fabricated a sturdy aluminum motor mount for a long shaft motor. I have a 4 hp two stroke short shaft motor from a duck boat I own, and am wondering if it’ll work. It’s 49 lbs and I realize it’s a bit overpowered and probably a couple of inches too short for this mount.

This is going to be a hunting rig and I need a modular platform for my dog so I can have him in front when I’m under way and behind me (so I don’t shoot him) when I’m using it as a blind.

I mad a modular U-shaped gripping post like I have on my Go Devil duck hunting boat that will also serve as a mount for my GPS, floodlight and bilge pump switch.

I also made a front deck out of aluminum tubing and expanded metal screen (to keep weight down) which will be used to haul decoys.

I’m going to do the rigging here and sea trials in the Spring in a non-hunting environment. I don’t want my maiden voyage to be in pitch black darkness in freezing cold water. I realize there’s a learning curve and want to do it right. I can fish/crab this summer and put it into service next hunting season.

Modular grab bar and dog platform

The grab bar is mounted on a saddle bracket cut to the height of the top of the cockpit. It sits on that and the edges of the cockpit. It’s held in place by blocking attached underneath.
When I motor out the dog will sit in the position shown.
When I use it for a blind I can put it at the opposite end after removing the grab bar and inserting another saddle bracket cut to cockpit height.
I also installed 1/4″ by 3/4 diamond galvanized metal sheeting to serve as decking to carry a bag of decoys.
All-in-all it’s been a lot of fun rigging this out.

The grab bar is attached by the saddle bracket by four split rings, two per leg. There’s a 3/8’s bolt that attaches through the bracket. It should provide a bit more security for a standing operator. It doesn’t have the same tolerances as Wavewalk’s CNC fabricated bracket. If it did it’d provide a higher degree of stability.

As much as stability I was looking for a place to mount my GPS and Spotlight since I head into the marsh before it is light.


The motor mount was fabricated by the previous owner and is too high. The anti-cavitation plate rides 2″ above the bottom plane of the boat instead of being flush. It has a plate on the underside.
I may play around with it and see how it works and either buy a Wavewalk mount or a Honda 2.3.


The expanded metal sheeting was dirt simple. Unfortunately, my Home Depot only had 24×18″ pieces so I had to use two. I later found an eBay seller offering 24×36 sheets for $25. The one change I’d make is to cut it 1/2 inch inside of outline of the hull. I cut it flush and left edges that snag.
I used 1/4″ x 1″ bolts with fender washers and Nylok nuts. Very easy and very strong…. and lightweight as well.


The platform was easy and the blocking holds it very tight. You could easily mount it to a bracket with a hinge to secure it on all four sides. My grab bar locks it in but for those not using a grab bar the hinge mount to a bracket would allow for easy folding and storage.
The grab bar certainly won’t do much by itself to keep you from losing your balance. However, it will provide something of an additional balance point (as opposed to thin air) with the tiller extension being the primary point. The principal purpose is to mount the spotlight and GPS. It’d never be stable enough to serve as a primary balance point I suspect.
I have a grab bar on my Riverhawk that I use with a 9 hp Go Devil. It’s mounted to the bait well and is rock solid. Though in all the years of use, it has never had to serve as more than an additional balance point and mount for my accessories. The nice thing about the bracket mount is its modularity. I can take it off and stow it in seconds, something I can’t do with my Riverhawk.


Back to the grating: Next time around, I’d find a source for aluminum grating- preferably powder coated. Much lighter weight and resistant to corrosion.

Also added a Rotopak gas can which works perfectly. It is simply AWESOME for this application. The mounting bracket holes align perfectly to the 3/4″ diamond mesh, it looks cool as hell and solves a real problem of safely transporting fuel while keeping it well away from potential ignition sources (the motor).

That additional storage up front would also serve to counter the weight of the engine. The mesh provides tons of points to attach bungee cords to secure decoys, camping and fishing gear, your picnic basket or whatever.

For crabbings, I’d rig this boat with a mesh deck, bushel basket, crab line, cooler and bait.
For fishing, rod holders, fish finder and bait buckets.
For clamming I’d take buckets and rakes and a cooler.
I’d keep the mesh deck and the grab bar with a GPS at all times.


Fishing offshore – the next frontier

Fishing offshore – the challenge

Let us define Offshore Fishing as fishing in the ocean or in the Great Lakes, away from shore, beyond the breakers. Such fisheries are characterized by currents and wind that are hard to overcome without adequate propulsion, and therefore hazardous to fishers who venture in them in small, human powered vessels such as canoes and kayaks.

Typically, people who fish offshore from kayaks tend to do it in more protected areas such as bays, or stay within a short distance from shore.
While these fisheries are relatively safer in comparison to distant and deeper ocean fishing grounds, they still present considerable challenges to kayak anglers, as well as to those who fish from other small, light, non-motorized craft such as canoes and dinghies.

Offshore kayak anglers know that traveling out there in a human powered vessel doesn’t grant them that they’d be able to go where they want or even get back to shore. For this reason, some anglers venture on long distance fishing trips with a mother ship, I.E. a large size motorboat that carries their kayaks into the ocean, and enables the members of such expeditions to return safely to shore. Typically, the kayaks used for such trips are sit-on-top (SOT) kayaks.

Comfort and safety factors

Those who fish offshore from a kayak can be exposed to wind and waves from the moment they launch.  Sitting in the L posture isn’t easy to begin with, but having to deal with the waves’ rocking motion and the constant wetness and  makes it even harder, especially  for anglers who fish in colder regions, where low water and air temperatures can be a critical factor.

Some kayak anglers outfit their ride with an electric trolling motor, and while this certainly adds an element of safety and increases their range of travel, it still doesn’t offer them the freedom to go on long fishing trips, or overcome fast currents.
Outboard gas motors are more suitable for this purpose. However, there are no kayaks out there except Wavewalk’s that can be outfitted and used with this type of powerful and reliable propulsion in a way that makes sense to the user. The problem isn’t just the poor stability of the mono-hull kayak design and the lack of effective means for its users to stabilize it, but also the fact that outboard motors are rather heavy and they work best when they’re attached at the stern, which is too far behind the area in which the kayak’s user is seated – Anglers who try to outfit their sit-on-top, hybrid or sit-in kayaks with an outboard motor soon discover that they can’t easily reach its controls, and they can steer neither safely nor conveniently, even when they use a long and articulated (U-jointed) tiller extension.

Unlike kayaks, small fishing motorboats (e.g. Jon boat, dinghy, small microskiff) are designed for motorizing, and their users can drive them without experiencing the safety and ergonomics problems that occur in motorized kayaks.
The users of such small fishing boats sit either facing forward on benches stretching across their deck, or facing sideways on benches located along their sides, or on a raised seat or swivel seat.
The problem with those small craft is that they feature flat bottomed hulls that work well on flat water, but offer neither good stability in waves nor much comfort to their users in the constant rocking motion created by the waves.
The same is true for the three above mentioned seating solutions – Sitting on a bench is fine as long as you can stand up from time to time and stretch, but it’s uncomfortable when you’re constantly struggling to balance yourself, and you’re prevented from standing up in confidence.
As for raised seats, they are great for comfort as long as you can stand up whenever you wish to do so, and as long as you don’t have to balance yourself while sitting in them. However, this is not the case when your boat is being rocked by waves, and in such cases you’d be likely to experience discomfort.

Most small fishing motorboats are not designed for car topping, or are just too hard for one person to car top. Therefore, they require transportation by trailer, which means launching and beaching in boat ramps, with the time loss and aggravation that entail…

For all these reasons, small flat-bottomed motorboats offer limited offshore fishability.

As for ergonomics, the W570 offers its users to travel facing forward while riding a saddle similar in size and shape to the saddles commonly found in personal watercraft (PWC – jet-ski). The riding position is unmatched as far as the power, control, comfort and balancing capabilities it provides, which is why it is so well suited for small, high performance, personal, offshore motorboats. No wonder that other high performance personal motor vehicles such as all terrain vehicles (ATV), dirt bikes, and snowmobiles all feature similar saddles.

The new W570 series

A few weeks have passed since Wavewalk announced its new W570 series of kayaks that are ready for motorized offshore fishing. During this period we’ve obtained substantial input about this new concept from W clients, fans and dealers who fish in different parts of the world.
It’s possible to classify their reactions to the W570 series into three categories – negative, mixed and positive.
Those who reacted negatively argued that there’s no real need for a spray shield and large-size inflatable flotation tubes, and consequently, these new accessories might reflect poorly on the W product and brand.
Those who had mixed reactions said that although personally they don’t see the point in either using or offering these new accessories, there may be a demand for a such a car-top boat among fishers who are looking to fish out of a small motorboat in the ocean or in large size bodies of water such as the Great Lakes, big and fast rivers, and other challenging fisheries.
Those who reacted entirely favorably to the new W570 series are mainly people who already fish offshore or in bays and large estuaries, and are familiar with the challenges that anglers face in such fisheries. Incidentally, there’s a higher percentage of motorized W kayak anglers in this third group compared to the general population of W angers.

All three points of view are legitimate and interesting –
Those who argue against the new accessories stress that as far as motorizing goes, Wavewalk has already shown in a most convincing way that its W500 series was perfectly suitable for driving while outfitted with an outboard motor at speeds that are similar to and even higher than the typical speed for other small motorized fishing craft such as Jon Boats, motorized square-stern canoes, dinghies and various flat-bottom watercraft classified as small-size microskiff. Therefore, adding large size inflatable tubes and a spray shield to a W kayak is overkill.
This argument is correct, obviously, but only so in the context of traditional fisheries where these other small motorboats are commonly used, which are inland, flats, small and medium size lakes, slow moving rivers, and generally speaking, in areas that are not particularly challenging in the sense that anglers who fish in them are unlikely to overcome either powerful and fast currents or waves while launching, driving and beaching their fishing boat.
It goes without saying that these relatively protected fisheries correspond to areas where the majority of fishing kayaks and canoes are used, as well as most other small, flat-bottomed boats. This fact puts the new W570 series at the edge of the current market, for better and for worse, in the sense that while the current market for it doesn’t seem to be big today,  there could be a substantial yet unfulfilled demand for such innovative, high-performance personal boat, whose offshore performance surpasses that of mono-hull fishing kayaks as well as traditional small motorboats when comfort, stability, ease of transportation, and launching & beaching are taken into consideration.

Keeping the cockpit dry

W kayaks offer several effective means to keep their cockpit dry on offshore fishing trips –

Typically, launching and beaching are the events that produce more spray, and are likely to get some water in if you don’t take any precautionary measure to keep the cockpit dry, which is easy since all W570 models come outfitted with a spray shield that blocks water from getting in from the front.
In addition, you can launch while riding the saddle aft of the middle part of the cockpit. Doing so would raise the kayak’s bow and further decrease the likelihood of spray getting into the cockpit.
And last but not least, all models from the W570 series feature a preparation for cockpit cover, which allows you to attach a small-size tarp over the front and middle parts of the cockpit, and thus prevent any spray from getting in. Once you’ve passed the surf zone and you’re out in blue water, you can easily detach the cockpit cover within seconds, and store it in one of the hull tips behind you.

These three defensive measures work effectively, and in addition, if any spray got in, dealing with it is very easy – All you need to do is take a couple large-size towels on board and drop them on the bottom of the hulls behind you, near the hull tips.
If any spray gets in, it will be drained to the bottom of the hulls, and the water would normally flow backwards, since the kayak’s stern is usually a bit lower than the bow.
The towels would soak the water, and if you see that a towel has reached its soaking capacity, all you need to do is grab it and squeeze the water outside the cockpit, which takes just a few seconds. This method is commonly used by canoeists and sit-it kayakers who travel in moving water.
If you’re into gadgets, who can replace the towels by an inexpensive hand-activated bilge pump. These pumps are popular among sit-in kayakers, canoeists and other small boat users. Their disadvantage over towels is that they become effective only in case a considerable amount of water has accumulated at the bottom of a hull, which isn’t likely to happen.
Another simple and effective accessory that kayak, canoe and small boat anglers use for bailing water out of their craft is a small-size bilge bucket. While this accessory is highly effective for this purpose, it’s not as easy to use as towels and bilge pumps are.

Watch the W570 in action –

Related articles

 The New Wavewalk 570 Series (W570) 2015 Models

 Motorized Kayaks

2.5 HP Lehr outboard propane motor mounted on my W500, by Robert Eller

I thought you might like to check out my W500 so here’s a picture of one of them. It is a Lehr 2.5hp propane fueled outboard.

Robert Eller


W500 kayak rigged for fishing and outfitted with a TMM 15 motor mount and 2.5 hp Lehr propane fueled outboard motor