Portable waste tank question

We also use a macerator to off-load our black and grey tanks when we dry camp. However, we don't lift or tow any containers/tanks when we load or off-load. We simply leave our 42-gallon Barker waste tank in the bed of our truck bed the entire time we dry camp. When our black and grey tanks are nearly full, we transfer everything via macerator to the Barker. We then drive to the dump site with the full Barker waste tank still in the bed of our truck, open the Barker's side valve and gravity dump. If water is available at the dump site we also flush the Barker. No lifting or concerns about rocky roads or distance. Works well for us.

We also store 5, 7 gal. Aquatainers in the bed of our truck. Typically, when we make our dump-station run we also fill the Aquatainers. When we get back to the trailer we use a portable water pump to pump it from the truck bed to the trailer. Again, no lifting or moving of any containers.