Quote:
Way more HP needed - you need at least 300 with twins but big singles work better 225 and up- up is better
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I don't think so, Dixon. I rigged a number of 23's back in the mide 80's with everything from twin 85hp V4's to twin 235 Evinrudes. The twin 85's worked just fine, although they were minimal. Top speed of about 28-30 mph, and a little slow to plane. Twin 235's put you around 60 mph, as I recall.
I think a pair of 115's, or 130's will work fine. The problem is weight. Modern 115's are all nearly 400 lbs, even the new Etecs. Twin Etec 115's or Optimax 115's will certainly be adequate power.
However, I agree with the idea of a single motor in the 250-300 hp range as a better choice, as long as you add a reliable 8-15 hp kicker motor for long runs offshore.
__________________
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