Right prop for Yamaha 115

[CHANCE1234]

Maybe this helps narrow things down. I usually fish solo or with one other on board, at least 1/2 tank fuel, usually more. Fairly light load, no t top or canvas anywhere. 60 lbs of ice if fishing. I don't mind the slop at all or getting wet. My planning speed with the 15p is like 12-13 knots and I'll be adding trim tabs so bow rise is almost non existant. I'm trying to get better speed at cruise and economy more than anything. WOT with 15p is 29/30 kts and I def have to raise the engine a whole still.

[jpappleby]

You haven't said what rpm your engine is able to obtain at wide open throttle. If the prop is right, WOT rpm should reach at least the middle of the engines specified maximum rpm range with an average load. If rpm is too high, increase the pitch.