As campers who boondock a lot and are frequently away from their TT all day in remote places, I Installed a Proven Industries 2516 hitch lock that also locks up the chains so theives can't use them to rap around their own hitch for a quick get away. Also disabled the electric tongue jack when we are not there. Other than that, there isn't much one can do if a thief has time and privacy.
I have a battery operated grinder with a diamond blade, a big sledge hammer and a long wrecking bar and I have seen first hand what they can do. A flimsy trailer doesn't have a chance.
Dave
