We had to do a good sized fleet of fuel tankers up to about 42ft long.
We took some excess pallet racks we had and welded the cross pieces into the uprights at the height that made it comfortable to work from the top of the tank down to the lower weld lines where our stuff stopped.
Built a back rail to keep from stepping off the platform & laid plywood with 2x4 supports down to stand on. 12ft long so we only had to move them 3 or 4 times to cover one whole side.
One for each side so we didn't need to drag them around and could work the side that was not exposed to the sun and rain.
wayne k
guam usa