Not multidrop, but I do a regular double-decker trunk run to another depot where it has to be tipped by forklift. There is a small folding stepladder at the depot for this purpose (and also for accessing the back of any other trailer that has no built-in steps). You should not be getting into the back without proper steps/handholds. Not just because you could fall but also because over time you will wreck your knees by repeatedly jumping down from a height.