I'll cruise slower and use my 5 gallon cans. That will help me shop for the cheapest possible price. I don't mind a nice easy cruise, and I'm down at the dock a lot more times every week than I pull away from it. It's not a big deal to me to dump ten gallons in the tanks a couple of times a week. I'm usually just puttering around at the dock and on the boat a few times every week anyway. Just doing those two things will probably mean that I'll put the same number of hours on the boat while spending about the same on gas as I did last year.
Just owning and maintainig the boat can be a chore sometimes or great expense. If I'm spending the time and money to own the boat, I want to make sure I use it as much as I can.