MY LOCKS GOT CUT OFF MY TRAILER DOOR, A$$HOLES TRYING TO GET IN THEY DIDNT. I INSTALLED TWO FLUSH MOUNT FLOOR TIE DOWNS ON MY TRAILER DOOR. ONE IN EACH CORNER UP HIGH. THEN WHEN I CLOSE AND LOCK MY TRAILER DOOR, I GO TO THE INSIDE, AND PUT A RATCH-IT STYLE TIE-DOWN FROM THE TOP OF MY DOOR, TO THE EXISTING TIE DOWN ON THE FLOOR AT A 45' ANGLE. THAT PRETTY MUCH INABLES THE DOOR TO BE OPENED, EVEN IF THE LOCKS ARE GONE. THE NICE THING IS THAT, I DIDNT SPEND A BUNCH OF MONEY TO SECURE THE DOOR. ALSO I LOOKED INTO LOCK SYSTEMS FOR IT, BUT I DIDNT WANT SOME HUGE/COSTLY LOCKING SYSTEM INSTALLED ON THE BACK DOOR OF THE TRAILER, TELLING EVERYONE (IVE GOT SOMETHING IN THERE)... WHEN INDEED I DONT!!!!!! MY TRAILER IS EMPTY. BUT THIEVES DONT KNOW THAT. 10 BUCKS AND 15 MINUTES, NOT TO BAD, FOR A PIECE OF MIND