I just found this video that Jim Luckett posted on YouTube over a year ago:
My two cents:
Looks cool and comfy.
I think sailing an S4 with a sail this size would not require outriggers. Maybe just one or two dagger boards. You’re most likely to have to use a tiller, unless you rig the S4 as a sailing board, and sail it this way. You can stand with both feet in one hull. The more I think of it, the more the latter makes sense.
Fifteen years ago, I sailed the little W300 with a DIY crab claw rig, standing, and with no tiller. It was fun.