"To be fair, alot of my missing trailer hitch stingers are attributed to someone else on the jobsite "borrowing" it (and the primary reason I started locking them so I wouldn't have to do the trailer hitch easter egg hunt), but I've lost a couple to plain old theft....a long time ago, before I started locking my hitch onto the truck!"
Nothing quite as frustrating as getting multiple rigs set up to tow (either boat, sno-go's or ???) then on Friday evening find out that #1 Son has borrowed either the stinger, the hitch pin, or the hitch bushing because he couldn't find his.
It's equally frustrating to come back from a long day of sno-going ready to unhitch only to find that some part (or the whole part) of the locking hitch setup is frozen and I can't drop the trailer at the storage spot. ....so I've now come to the point where: a) on either boating or sno-go trips, I use locking hitch pins as well as locks on the trailer ball; and b) on sno-go trips, I carry a small butane torch (fits in a shirt pocket to warm it up) and a larger gas torch for thawing purposes.