I have yet to see a carry-all in person, but the pics in the online catalogs make them out to be similar to lift forks, with the platform removed. That got me wondering; is it possible to use the frame of a carry-all with wooden pallets, much like with a fork lift, only with the carry-all's frame bolted to the pallet once the arms had been slid into place under the pallet? Holes could be drilled into the top deck of the pallet to line up with the holes in the carry-all's frame, and bolts passed through those holes. That way, you could have a barrel full of concrete sitting on a pallet, and when you needed ballast, you could slide the carry-all into that pallet, bolt it up, secure the barrel, and you're GTG. The pallet could be trimmed to size so there's no excessive overhang on the back of the tractor. Would that work?