Tips:
It ain't level till she says it is, no matter what the bubble gauges say.
Praise your spotter, frequently and loudly. If she makes a mistake, laugh it off or blame it on yourself.
Praise your navigator, for the same reasons.
Go out to eat once in a while and give the cook a break, for heaven's sake. (I'm the cook, so I know.)
If something is not perfect, just say, "Well, it's only camping," and let it go at that.
Be twice as alert when towing than you are during ordinary driving. Only the paranoid survive.