Tried that once in a Cessna 404 and it almost fell on its bum
I used to back up both the Twin Otter, and the Piper Cheyenne, and that worked fine, as long as you had excellent situational awareness behind you. When I was flying the Caravan, the sales guy warned me to not attempt backing it up, because it would likely bang the tail, and cause $20k damage. I took his advice.
I got good at backing up the 182