My SIL always ran a long locked chain thru two opposite wheels of his POPUP trailer. I always just lock my trailer hitch in the closed position.
Either of these two methods of course could be easily comprised but might slow the thief down and maybe they would pick on a easier target...
I would be more concerned of my batteries, propane tanks, and the 2KW Honda generator sitting on the ground unattended. We Lock everything up when unattended and anything important to us goes where we go secured and out of sight in my truck.
common sense prevails here...
I have never had anything that I was aware of stolen from me at the camp grounds but did come back from grocery shopping one day around 2PM in the afternoon and the neighbor camper's 3KW Honda generator that was log chained to a small tree was stolen in broad daylight. They actually cut the small tree down to steal his 3KW Honda generator. This happened at the ELKMONT Camp ground in the Smoky Mtn Natl Park a few years back...
By the way there is no dumb questions - only dumb answers sometimes mine included haha...
Roy Ken