RE: Hydro airfoil ????z
I made a wrap of .016 Aluminum over the cannard with the rear edges bent to accept different size blades. First I used an Aluminum blade, then a piece of acrylic that you see in picture, secured by clamping with screws. Even though i have several sizes, ( 3/4" and 7/8" ) the smaller 3/4" high seems to work just fine. My spoiler angle is 40 degrees. You also can use the Monster Truck spoiler that Bud Driver has on his boat and that works fine also. I'll paint the Aluminum to match the hull after I finish testing.