Reaching rpm will be difficult its almost like hooking it to the dock.
Perhaps a prop intended for a pontoon or some other difficult to push boat.
4 big elefant ear blades not too much pitch. If your in a houseboat area you may want to ask around.
Your 75 will use about 8 gph (gallons per hour) at wot.Will probably go almost as fast at 1/2 throttle.
