Hi guys, I've been interested in the Aqueon / Powerswim type of swim aid for a while now, and since they don't look all that complicated I want to try to hack one together. Has anybody else done this, and if so do you have any tips? The patent for the aqueon shows symmetrical hydrofoils for the fins with a nice curve to them, and that being the part of the project I'd be least familiar with I'm curious if the device should work with flat foils instead. Seems like that should be a lot easier to build since I could just cut them out of marine plywood and throw a few coats of epoxy on. I seem to remember reading somewhere that even a flat wing produces lift somehow, so I feel like it will be okay, maybe just not as efficient as a more streamlined form. If it won't work, does anyone have any suggestions about how to go about making a decent hydrofoil with basic household tools?