Should I re-power with T25 of F40?

[johnboatcat]

I currently have a 30' sailing catamaran displacement hull, powered by a 2004 T25. The motor works well on the boat except in very high head winds. It is time to re-power and I am wondering if I should go up to an F40 (same weight, different gear ratio) and re-prop the F40. Would the extra 15 hp help me in high head winds or would it just over rev? What prop should I use on an F40 if the T25 uses the special dual thrust 10 5/8 - 8? (There is a dual thrust that fits the F40 in 12 1/4 - 9.) Thanks!

[boats.net]

The T50 would probably be better choice for that heavy of load, if use the F40 then would need to use smallest pitch prop available with largest diameter like the dual thrust style.