A pretty good idea to me would be to sheer off the heads of the stock bolts and drill a very small hole close to the end where the head was...all the way through both of them (drill from the sides). Then use some Loctite on the threads to hold them in place once you screw them back in (drilled holes must be on top). Get you some small cotter pins (spreadable clamp type) and just push in. Pull out when you're ready to lift tank. Just my .02, but it can be worth a million bucks sometimes.