Check out SUPERBUMPER Hitch Step - Stops Rear End Collision Damage.. My brother has one so it looked like a good idea so I purchased one also. So far its been hit twice with no damage to my runner whatsoever. One was a guy hitting my parked runner and the other a low speed impacted while in traffic in NY. Both times I had no damage and both the offenders Smack up they're bumpers instead. The website even says that they will replace it for free if it should ever get bent in an accident. You can't beat it. It was definitely some of the best money I spent, I highly recommend it.
yikes - that looks pretty solid. that would probably do all kinds of bad things to anyone that rear-ended you at anything over a crawl.
i was thinking of making something similar for my wife's T4R since she got bumped in parking lots a couple of times (hit and run). my friend's metal shop students were going to weld me up some square tubing for a "hitch step" that could also serve double duty as an extra bumper.
we were even thinking about extending it over to the sides a bit more and using the tow hitch mounting points to sort of make a poor-mans "butt armor". (she's backed into low poles in parking lots a couple of times - couldn't see them below the rear window, and they were just perfectly in between the rear parking sensors).
kinda ghetto, but cheaper than a rear bumper cover (i just have to pay for the tubing and some plate lunches or mcdonald's for the students).