That isn't going to give me the rpm I need to get this pig moving. It's a very draggy 5lbs. The tuning window of the needle on a 10" prop is 1/8th turn from rich to lean. Too much prop/not enough engine.

Moreover, I can't run 10" props on the boat anyway - the CG would be too high. Besides, it's only a .29, not a .40.