Re: performance of twin 150's on 23
I'd love to see the torque curve for the 115 that will plane a 23 from offset to one side. As for planing from the middle. I've rigged more than one 23 CC with a single 140 Evinrude back in the early 80's. As I recall, we had them propped with 15" pitch props, and they had a top end of about 25 or 26 mph.
I think you could probably get a single 140/150 to plane the hull if you had the right prop to switch out when needed.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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