[flyingfrizzle]

That looks ruff, I would look at getting a new tank while you are doing so much already. Bad to do everything you are doing and skimp on the tank. My dad is the shop foreman at Custom Marine here in Newbern and he has done welding repairs on aluminum tanks before so it could be fixed but I thinks it would need a whole New bottom welded on it. My guess you will spend about half getting a new bottom as a whole new one.