OB for C22
The short answer is that for my use on my old C22, 2.5 hp was plenty--with this very strong caveat: You're talking about a boatload of money for an o.b., so of course you're going to be tempted to try to get off cheap. The main way to cut the cost of an OB is to get the short shaft. DON'T DO IT. I owned a C22 until just a few months ago. It had a very reliable little Suzuki 2.2 hp outboard motor. The thing worked like a charm ... except that when I was running for home in foul weather, it would cavitate. I couldn't keep the prop in the water, and on occassion it would overheat and die. Not a good thing when the weather sucks. So, I'd say spend the money for a long shaft--it's a true life saver.