"There is always mixed feeling
"There is always mixed feeling about the effectiveness of hydro-foils. They are basically like a small wing and they do pretty well what the wing on an airplane does, supply lift. If you have a boat that is pretty tail heavy and run in a lot of sloppy or choppy water they will lower your planing speed down. You can stay on a plane but not pound quite as hard. I originally installed mine to counteract a slight cavitation problem and boat tended to dolphin when trimmed out for maximum performance.Foil overcame both those conditions to a large degree.
My feeling is, they lower your planing speed so it`s feasible that they will help a boat that struggles to get on plane because of the added lift to the rear of the boat, but they are, by no means, a cure-all."