On Tue, 20 Oct 2015 11:01:22 -0700 (PDT), Tim
wrote:

I have it figured out... I think.

Two 12 gal. Miller fuel tanks tied together and using a lawnmower gas cap fuel guage. The cork on the guage would give adequate readings and seeing it doesn't go to the bottom of the tank, it wound have plenty of reserve when the guage actually shows empty.

And instead of dual batteries, I'll use an engine battery and throw in my thousand amp jumper pack. It charges via a cigarette lighter and you can use the same outlet for accessory power. It'll be tucked up in the poor excuse of the cabin with the small cooler. The jumper pack will reduce weight and valuable space.

Though compact, this should allow plenty of room for the wife and I to enjoy a long run on small rivers.
This is looking like fun in the making.

===

I'm curious how you will hook up the two fuel tanks and/or manage the
switch over. If you draw from both tanks simultaneously, there is a
very real possibility that one tank will run out before the other.
When that happens you will draw air from the empty and the engine will
shut down even though the other tank still has fuel. What I've most
often seen is quick connects on each tank and a single feed hose. When
one tank runs out or gets low, you just move the feed hose to the
other tank.