If you're planning on towing with it much or intend to maybe 'wheel it (recovery point) you could invest in a receiver hitch. Should be a couple hundred and then there's no question. I actually had a Marlin rear bumper on mine with a 2" receiver and although Marlin didn't rate it for towing due to liability, it was a lot nicer than using a ball on the bumper.
Edit, like this. A Curt for $176.
http://www.etrailer.com/Trailer-Hitch/Toyota/Pickup/1986/13086.html?vehicleid=1986997201