Re: Question on minimum power for my 75' 20 SF
I own a 20' Seafari with a 90 Mercury. Cruise at 24-25, Top speed about 33-34.
I used to sell SeaCraft boats new in the early 80's, and I rigged more 20' center consoles with 85hp and 115hp Johnsons that any other size motor. In fact, we rigged more 85's than 115's. My current boat had a 120 Chrysler on it when I got it.
So, yeah, a 90 will work fine. Just don't expect to outrun any fast moving squalls.
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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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