Yeah I have 2 tanks. So 2 returns and 2 pick ups. I welded a return bung on both tanks and also installed a shut off valve at the return bung so I can return only to the tank I'm drinking out of. I'll let you check it out in person out on the lake or if you need to see ASAP you could stop bye.
Yeah i run two tanks as well. But where my tanks are (under the gunnels) i can barely connect a hose for the return, forget about putting a valve in there too.
right now i have -10an bungs welded in the bottom of the tanks, to 1/2npt valves (so i can run off of individual tanks). To a 1/2npt Y fitting to the pump. Then to the carb/NOS setup
My old pickups were at the top of the tank so these will bbe my return lines now.
However like i said, i cant really fit the valve up by the tank. So the vavle gets to go on the Y off of the return from the pump