If it's a stern drive boat, I've tested, owned, ran, and raced a few props.
However, I now find myself in "unchartered waters."
I have a 26 Scarab Sport center console. I bought the boat with twin Mercury 150's. The engines were old & tired so I sold the twins and lucked into a much newer Mercury 250 offshore. My problem is balance. Since going from twins to a single the boat is now Bow-heavy. My question is, what would be the best bow-lifting outboard prop for this engine?

Just add another 250!! Problem solved

There are stock and of course modified options. Testind a few will help your seat of the pants as well as actual numbers make the decision.

I'd try a Merc Revolution 4, a M+, Tempest+ TXP, Fusion 4 and or whatever you can get your hands on.
Let us know if you would like to test any propellers through our test program.
http://bblades.com/propeller-test-program/


Brett