Three blade prop recommendations

[jmmeis]

I am looking at replacing my two blade prop with a three blade on my 30' O'Day . She has a recently rebuilt 12 HP Yanmar. Any recommendations as to which prop may work best? Size, material, etc. Thank you.

[Sailmonkey]

works best is subjective.

do you want low sailing drag?
huge stopping power in reverse?
simple and bulletproof with higher drag while sailing?

for sizing you'll need to supply the
engine HP : 12
Engine Rated Speed : XXXX
Transmission reduction ratio : xx:xx
Direction of rotation: LH or RH

[Cheechako]

For a standard type of prop, the Sailor has significantly less drag than a standard 3 blade. Google "MIT prop test"