I'm trying to figure out where I'm going to put my new-to-me 21 gallon aluminum boat fuel tank which measures a nice low profile 36x18x7 inches high. I have a j-moose style roof rack sitting on 8 Gamviti mounts and the tank would fit nicely up there and the mounting would be very solid. It should ride pretty well since it probably would only get used a few times per year. The tank is all aluminum and very light when empty. Be like having 4 jerry cans up there, only with just one manual valve and a straight gravity feed into the main tank. Would have to climb up to fill it up, but again, that would be pretty infrequent. The main reason I'm considering this instead of the usual location is because I want to put a rear mounted winch behind the 4x4 Labs rear bumper (that will be coming soon hopefully!) and already have a Ramsey RE12000 all rebuilt and ready to be fitted up. No much room left with that monster under there. So besides adding some weight(when its full) up high, is there any other drawback to an overhead tank I am missing here? No pump to worry about, piping is protected, won't rust up there, but a bit of a pain to fill? Anything else to consider before I start cutting?