I have a 2006 SX 200 with a 150 Vmax on it and my question is what size prop should I go with. It currently has a 21m on it and runs 60 @6k. I don't want to overrev it .It seems to have much more throttle left, and it just starts to lift @6k. Always run the boat full of gear and no less than 1/2 full in fuel. Jumps on plane great. Any suggestions. Thanks