I lost the front hydrofoil blade from one of my Aquaskippers. This new blade works great as a replacement.
The foil section is just right for the purpose. And it's a really quick project.
The resulting blade is strong enough to use for an "air chair" or "sky ski" type hydrofoil, or any other weird hydrofoil project.
You can get windsurfer fins cheap at flea markets and yard sales.
You'll need the following:
Two windsurfer fins. Mine were each 9" long.
Epoxy. Not "5 minute epoxy". That stuff is crap.
Power Sander. I used a belt sander mostly.
Dust mask, safety glasses, clothing to keep the figerglass off your skin.
Step 1: "Design" Your Hydrofoil
Like I said, you can get windsurfer fins cheap at flea markets and yard sales.
Unless you need them. Then they're expensive. So stock up now before you actually need them.
You'll notice an odd phenomenon, which is that no matter how many of them you have, you'll never have two that are the same.
So pick a couple that are close enough and live with it. The earth isn't symmetrical either or the ocean. It's not going to make any difference.
Step 2: "Analyze" Your Hydrofoil
That's a 63010 section modified to take the concave out of the trailing edge of the foil.
If you find a fin with a different section it won't be enough different to matter.
If you want to see what some other sections might be, browse the foil catalog at UIUC. If you want to import the foil to the XFOIL simulator and make graphs to tack to your wall, here's some more info on that collection.
Your fins won't be exactly the same thickness, so get an idea where the center lines are and maybe mark the base with that. It won't matter if the centerlines are at different levels, but you'll want both fins to be at the same angle of attack.