I just bought my first sail boat, it’s a 1981 S2 9.2 with the 15hp yanmar (2GM). It’s in great shape overall, I’ve been extremely lucky for her age. I have been told by a few people that the only issue is that it’s under powered...(can’t fix that now) but also was told that the 2 blade prop is not as effective as a 3 blade. I’ve found that the YGM can have either the 14x11 or the 15x9 on 3 blade. I guess my question is mostly about practicality, I was told that the 3 blade makes it more manageable and maneuverable under power. Does it make a difference really? If it does is the shaft 1”? Or 1 1/8” I didn’t have my caliper when I was at her last, but to my eye it’s at least 1”. I would be able to do this on my own but my tools at school are in Rhode Island, I live in Mass, and the boat is on the hard in Conn, and I drive a 2 seater...so it’s hard to have everything I need when I’m going between all of that. Any info I can receive would be greatly appreciated.
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