I want to move the battery banks on our trawler to a new location. *Space I want to put them is not flat. *I am thinking instead of epoxying in a full set up that I can get some painted plywood and just set them a good bead of 4200 or 5200 (4200 being the non-permenant solution but still strong enough?). *Any reason that is a dumb idea? *On one side I would bolt a ledger board into a non-critial bulkhead in the engine room and then screw that side of the support shelf down so just the one side (outboard) would be set in 4200.