In addition to the use of the locking Bar Buddy, I lock the hitch head to the hitch and then put my receiver locking pin in the hitch. If anyone wants to steal the trailer, they must cut or saw at least one lock.
The only thing I have to store is the sway controller.
By the way, the trailer is stored in a fenced locked storage area under constant video monitoring, with two seperate premises with livein guards.
When not in the storage area, there are two 100 pound German Shepherds under contract. One is completely black including part of his tongue. All you see at night is his teeth. When he stands on his hind legs, we look eye to eye and I am six foot tall. The other German Shepherd is a sweet looking standard female but she does not tolerate strangers. When provoked she strikes like a snake.
However both dogs are very popular at the Vet hospital and senior care centers in this city. They know when they are on or off guard duty.