I have a 1988 20ft Aquasport Osprey 200. I recently put a 1992 Johnson 150Faststrike on it. It came with a raker 14 1/2 X 22 which had great holeshot but only gave me 4500 rpms and 45mph gps. I also tried a 14 1/4 X21 and it ran 4700 rpms and 47mph. I want to get rpms higher so a local prop...
