I have my 60 gallon upright mounted to a square 1/2" thick aluminum plate with old craftsman tool box castors under it. Had people tell me it was gonna walk around when running. I set the castor locks and it doesnt move. The plus is i ran a drain standpipe off the bottom to a ball valve and a small clear plastic hose. Any water collects in brass standpipe and not the bottom of the tank, i hold the hose out the shop door and open the valve to drain it.