Kringe,
I have a Johnson/Evinrude Sailmaster 7.5 hp on my 1975 Ericson 25. Based upon my limited use of this boat (which I purchased in October in New Bern, NC), I wouldn't mind having a few more horses, especially when dealing with opposing currents/winds in coastal waters, especially near harbor entrances. I can say that the 7.5 hp was close to not-enough when beating into chop on the Pamlico Sound / Neuse River when coming into Oriental, NC (where I had her hauled out). One day I would like to upgrade to a 10 hp, but right now I have my hands full with some more pressing matters - rebedding deck hardware, repairing centerboard, and updating the electrical system.
By the way . . . what's going on with your centerboard issue? I read your posts about it dropping off your boat in a busy channel. Are you having another one made?
Take care,
Roscoe
E25, cb, Hull 226