I'm still curious as to what kind of mileage here to the sandbar entails? My boat gets great gas mileage by design with a 2stroke. I would be willing to guess that it is probably close to the mileage you are seeing with your 4-stroke. Maybe 4-5 miles to the gallon is what I get in cruise mode.
Look it up on the Allison boats website.
Long live the 2-stroke outboards!!!
Say what you believe,
Wicky