I started this year with a 19 pitch prop, put on a hydro foil and my cavitation plate was about 2 inches below the bottom of my boat. I thought the hydrofoil would take care of the front end hopping but it didn't. Top speed for my boat, 79 Starcraft 17ft fiberglass with 100hp johnson, was 35-37mph. In order to achieve that you had to hang on to your teeth from the bouncing! Since reading through this forum I have thrown away the hydrofoil, lifted the engine and have achieved about 45mph and it is a lot smoother. I have also had some other minor problems, but this forum has solved them all. I would like to thank all that were involved!