Our trailer was broken into in the last two weeks while in storage in Franklin, WIsconsin. It looks like all we lost was a set of Black SCCA / OZ / Van Diemen 13" wheels with a set of Hankook rains. They got into the trailer by unbolting the hasps on our Featherlite trailer. You may want to modify your trailers if you have a system like this as it was simple for the thief to get in. The cable tie was so I could move it without the door opening. A simple fix may be to just weld the nuts on.
If you could keep your eyes out it would be appreciated and check how your door locks are designed!