I have a 50 Yamaha 2 stroke, would like to go faster but keep motor stock. I believe I have about the best prop on it now, however have not tried a semi cleaver style prop. 60 or 70, 2 or 4 stroke? I like the fuel efficiency and quietness of 4 stroke but don't like the weight. What about gear case ratio? Either one is over the HP rating for the boat, I just think the 4 stroke would be way to much weight. Hull is a 1652 Lowe Roughneck, tiller.
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