If I'm over 60' or 70' I disconnect the hitch, pull out the eight and rap down to save my hitch cord. I never learned to back up on descent.
Back in the old days we used to rappel 100'+ waterfalls for fun, did it with beginners even, but we kept a belayer for'em on the rope at the bottom... had a girl get her hair caught in the rig once... not fun, had to come down to her and cut it out with a pocket knife.