On Tue, 2 Nov 2010 07:44:44 -0700 (PDT), Frogwatch
wrote:

Those mods to the pontoons look interesting. Now, if he went to a
larger engine and added planing strakes, could he expect better MPG or
just higher speed. (fuel flow meters ought to interface with impeller
knotmeters to get mpg).

If you increase speed without increasing horsepower, mileage will
improve.