[JohnB]

Flo scan is the way to go. It will pay for itself in 20 trips or less. You can change the trim/rpm/tabs on the boat to get the most economical speed based on load in the boat and sea conditions. If I run mine at 4400 rpm, I am at about 30 mph getting 1.6 mpg, if I bump it back to 3800, I run about 26 mph, but get close to 2 mpg. On an average trip, I run 100 miles, the difference is over 12 gallons, at 4 bucks a gallon, thats 48 dollars, by just slowing down 4 mph or so.