[Fitz]

Another longer-term suggestion: install a manual selector valve. I have three tanks (two saddle and an added one under a rear bench seat). I originally just tied them together, but soon found that the fuel draw was never the same among all tanks, and was not even consistent among them. I then installed a manual three-way selector valve.

The selector valve works great and has the added advantage of definitively letting you know when one tank is exhausted. So if you have two tanks and are running offshore to fish, that exhaustion will warn you that you've reached the outermost limit of your trip. I personally never run that skinny on fuel offshore; I stop at the end of the first tank and keep the third as insurance for the sometimes difficult seas I encounter on returns. You can burn a lot more fuel running back against a stiff wind and hammering through an angry inlet, and the last place you want to run out is right there.