although my boat is smaller and much lighter
cruise:
3500 rpm, 29.9 mph, 11.2 gph, 2.63 mpg
at WOT, 5600 rpm, 51 mph, 24.9 gph, 2.04 mpg
my gph at WOT was pretty high, but i changed sparkplugs, wires, and fixed a sticking timing advance, i now burn about 22.5 gph at wot