Just bought a 15 ft. aluminum Sylvan Yukon w/Honda 15 motor almost brand new. Compression is 130/133 and runs perfect. Boat weighs about 780 Lbs loaded. I do have the hydrofoil jr. installed. What can I look for on fuel consumption ? I'm thinking a 3 gal tank is fine, with 2 gal bkup can in the boat at all times. My brother says 6 gal. minimum, but he runs a 40 Merc 2 stroke on almost the same boat.