Its been mentioned but if they want it they will take it one way or the other. I have to agree that if you value it you have to hide it and even that works only so well. The hitch locks will only keep the honest people honest, don't forget the hitch pin lock as well and then looping the chain and lock that. They will then pick it up by the tongue and haul it away on foot and roll it up onto another trailer. A buddy of mine had his boat stolen out of his carport while he was sleeping, they did it manually, rolled it down the street where they somehow hooked it up to a truck and hauled it a mile or so away, cut the cables and stole the 150hp outboard motor, rolled the boat down a ravine, totally it. You can lock the wheels with bike locking cable but again if they want it bad enough they come prepared. They found out years ago the easy way to get past those Kryptonite U-shaped bike locks was by taking a small can of Freon and freezing the lock in one spot, then hitting it sharply with a hammer, shattering the lock. A friend of mine rode her $1500 mountain bike downtown and locked it to a city street sign, she came back in four hours to find the street sign cut with a pipe cutter and her bike gone...gone...gone. The only thing I agree with the Arabs about is dealing with thieves...they cut off his right hand, everybody eats out of a communal bowl....everybody eats with their right hand, the other hand is the one you use to clean yourself with. Noone eats with a one handed man in that part of the world.