hummm, you think they had insurance?

Sound like something funny going on here, cutting a couple of heavy chains, lock on a gate then a master hitch lock!

I can see cutting the chains.... But I would really like to see what they cut that lock with, they must have had a cutting torch, or it must have been some "mickey mouse" lock!!

http://netposse.com/stolenmissing/pdfflyers/ArlingtonTX_trailer_April09.pdf

Probably cut the pin in the hitch lock, or the hitch lock, but not the pad lock if it was a good one. Everything on a hitch lock is soft with the exception of the pad lock. 5 pound sledge and a few well placed swings...presto...no more hitch lock. Or, the quieter route would be a hacksaw...

And then there is always the fact that someone will use a $5 padlock like this http://www.1st-in-padlocks.com/4530-ecomony-laminated-padlock-p-24.html that you can cut with bolt cutters rather than spending $40 and buying this http://www.masterlock.com/apps/catalog/product.jsp?target=commercial%7Csecurity&subId=D6327 .

You have the good one! And a good lock. Those fat round master locks are good. Can't get on them with the bolt cutters, and even if you could, you have to cut it twice to get a chunk out of it to get it off. The dogs and you are probably the best defense though!