What to do?

[loafar]

I have a standard Subbie with Rotax C Box with a 2.62:1. What in your opinion is the best prop set up?.2, 3 or 4 blades. I have 38" from centre of adapter plate to the keel.

[nunto]

I run my old subies with 3 blads 72" still got hole new set up here never been used.I steped up to rotax