Someone tried to steal my trailer this week while on a trip. The trailer was hooked up at the time. They loosened the nut to bolt my hitch onto their receiver. They must have only had one wrench, as it looks like the top of my hitch will hold the bolt from turning. The loosened nut eventually worked the nut and lock washer loose. I caught it when it started making noise on the trail. I tack welded the nut to the bolt now. They also tried to steal my saw, but gave up after finding the cable and padlock holding it.