Chance,
I made 6 trips to Abaco in the Bahamas back in the late 70's/early 80's with a 1975 115 Evinrude, back when they were rated at the powerhead instead of the prop, so it probably wasn't much over 100 hp at the prop. Running with a very heavy load (dive gear, 2 wks worth of food, etc.), and 65-80 gal of gas, (35 of which was even in the main tank!), I averaged 2.8 mpg pretty consistently, burning about 8 gal/hr and cruising about 20 kts. With a lighter load and more modern motor, you should do at least that well. Denny
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