Wow that IS an impressive build.
I too considered foiling as out of reach. And there's a degree of impracticality involved, for launching/beaching/retrieving. Active/articulating systems on the high-dollar setups solve that, but that really raises the bar for us DIYers.
I'm glad you were able to get some ideas from what I've done. That's a big part of why I did it: to inspire others to embark on their own such missions. That journey is as much fun as the destination IMO.
Feel free to post your progress here!
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