I also have been wondering about the performance of the hydrofoil. They make a Jr. version rated for 1/2hp-40hp motors. I do think it would help, and they claim it does or your $$$$ Back... I have looked closely at some. I have 12' aluminum semi with a merc 9.8 3 blade prop, and the boat just barely gets up on plane. It also see-saws in slightly choppy water, the hydrofoil will take some of that away and stabilize the boat, and is supposed to bring the bow down or stern up, however you want to look at it... Great for when you're movin' but probably won't make a difference when trolling. The only thing I don't like in the design is that most of them need to be bolted to the cavitation plate by drilling 4 holes. What happens if you hit something because you now have a larger cavitation plate(and you will hit something). The drilling of the cavitation plate I think will weaken it causing hairline cracks. And when that sucker breaks off "YOUR SCREWD".
This is the only thing preventing me from buying a hydrfoil. If it mounted differntly, I'd be sold. Moving things around in the boat will also make it plane differently.
Fanman, I think it would help, but maybe only a tiny bit, you have a 6hp on a 14' boat, it'll never get up and go, that motor would barely get an 8' boat on plane. It's a trolling motor and that's it. I'm sure a hydrofoil performs best when the boat is more properly matched to the motor or visa-versa.
Anyways blah blah. Unless I can find a GOOD clamp on style, I'm not willing to risk damaging the leg...
hope this helped a bit
:wink:
BTW: It also helps when the cavitation plate is completely level with the bottom of the boat. adjusting your motor to this is key...so I've been told