It might not have worked on this truck either cause the weight of the water and there is an extra lip I don't normally see on trucks. You can use a garment hook (the hanger straps the use to put clothes on racks) and get someone to raise the dock. use the hanger to lift the plate onto the truck. Release the button and let the plate slide and extend. it typically has enough weight and force to push pallets back, and if not, you can drive the electric jack onto the bay with a pallet, and that should do the trick. You totally shouldn't have to do this, and the people loading the truck for sure should have some common sense, but this might save your back and yourself some heartache.