There have been theft attempts on mine. The trailer has moved on it's own, miraculously
but not very far. I have a Denver boot which would require some hefty cutting to remove, my spare it hanging off the back, which when parked, is over a 5 foot drop and against a tree, and I have a hitch lock.
If someone REALLY wants it, they'll get it, but Donna is correct. By the time they got through all the locks etc, there would be 10 nieghbors on top of the thieves.
In one attempt, thats what happened, the neighbor across the street yelled from his deck and the snooping thieves took off.
My dogs make a racket too. Everyone in this neighborhood has had thier gas syphoned but me. I suspect in the middle of the nite when these creeps creep, the dogs call attention to anyone around my cars and they move on.