Pete, after I got cleaned out a year and half ago, I was in the same boat you are considering different options for security. I ended up getting locks made by American Lock http://www.americanlock.com/ They are the shackleless padlocks model 2000 or 2500. They look like large hockey pucks and are VERY high security. It would be easier to cut through the side of the trailer than to try and cut these. I also moved my trailer right next to the house just in case someone was stupid enough to try. The amount of noise it would make would wake you, the neighbors and the dead. My trailer doesn't have a window so you would have to do something different there. I haven't had any problems since. Good luck and give American a look. They also offer many other locks.

George