Build a small version of the BMWO wing, with a taper towards the top and several adjustable flaps, with a mid slot to adjust for even more camber, there you go... Now, who's going to trim it for you on an A cat? Too many strings for that I think. It might work on a 2 up boat, and since a new mast for an I 20 is about $10K, why not start there? I'm sure Ben could build something suitable for about that amount!
You could ask Ben to build you one for your blade.
"Do or do not. There is no try." - Yoda "Excuses are the tools of the weak and incompetent" - Two sista's I overheard in the hall "You don't have to be a brain surgeon to be a complete idiot, but it helps"
