I don't actually drive with one often, but when my family goes camping we almost always haul a trailer. (It looks to be a 'utility trailer' that we removed the high back from) When we arrive at the campsite, my dad pulls up, unhitches the trailer, and moves it (my mom says he looks like a donkey) by hand. He has tried to back it up, but has had a few too many close calls.
Is there some trick to backing up well?