Have a friend who has a Cole Hydro, this boat is turning 7000 RPM, but won't kick the tail. It has a 11 1/4 x 17 cleaver with 25% gears(?). What should the clearence be between the prop and the strut? This boat has a 588 tall deck that is making 850 HP on the dyno with 830 lbs. of torque. It appears that the prop is extended out past the transom by about 1/4".
Check motor placement and weight distribution. If its doing that RPM with that combo it must be bucking pretty hard to get the tail up if it still cant do it....