On Thu, 21 Aug 2008 09:13:11 -0400, SmallBoats.com
wrote:

Without a guage, I need suggestions as to how to estimate my gph use
on a small skiff. I could fill the tank and run around all day, but is
there a better way?

Best way is to full the tank, run it for an hour at varying speeds,
then fill it again - the refill amount will be your GPH.

Simple as that.