I have a Tohatsu 3.5 2 stroke outboard that has a tank the size of a big gulp. I was hoping someone had hooked up an aux fuel tank and could share their wisdom. It doesn't have the adapter for an external tank since the tank is internal and there is an air valve for the suction of the gas through the line. Am I just going to have to carry a can and pour it in? I don't like the idea of doing that while on the water. Any ideas for hand pumps? Anything? Thanks.