Thumbs up to the IBall camera. http://www.iballhitchcam.com/
For a newbie who has NEVER tried to back-up and line up to a TT before, I was just about perfect on the 2nd try The first try didn't count because I had to realize that the camera shows a negative/reverse image so I thought I needed to go right when I needed to go left.
From side-to-side I lined up perfectly. From front to back I was off about 1/2" if that.
The camera can also probably be used to back into a site, but might depend on the angle or position of the camera on a bumper.
Two thumbs up.