Re: High Thrust Prop for Tohatsu 9.9 on Nonsuch 22
It seems you might gain a little when heading into the wind or current, but loose speed in the reverse conditions .
Not a topic I know much about. However, there's a company called Piranha Propellers that makes high quality non-metal props. I've heard some good things about them, but haven't used them.. However, I believe the blades are changeable. Might be worth a call and chat.
they're on the web.