Re: fuel range in a 20
I have a new 28 gal tank in a 20'Seafari, with a 150 carb Merc. I usually cruise at 4200 rpm's, (about 30 kts), and overall, I get an average of 2.9 nautical miles per gallon, according to my calculations. Last year, during a long run up the ICW from Key West to Long Key State Park, (74 statute miles according to my GPS), I burned only 19 gallons of fuel running at a fairly constant 3800 rpms & 27 knots (31 mph). That's 3.9 mpg, and I was very pleased with that.
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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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