Back up camera for truck and even on a fifth wheel??

We have a backup camera mounted on our fifth wheel, but don't use it for backing up. Too many other variables to be aware of. We use it for going down the road to see what's behind us, etc. We have a backup camera on our TV and use that to line up with the hitch on the fifth wheel. When close enough, I let the tail gate down so DH can back up the rest of the way and hook up. Works perfectly.