Alpha Tire lock
I use a tire boot type of lock, called Alpha lock, which clamps around the tire and rim. However for this to be effective you must prevent the tire from being removed (or replaced) so this calls for a second layer of defense: Lugnut locks (I use Gorilla brand), one per tire. I also remove the hitch equipment from the tow vehicle receiver and leave it locked to the trailer, hitchball and all, with the hitch pin locks (receiver and ball coupler locks) in place.
And now for the belt and suspenders....I installed a Radio Shack home security alarm box with a dedicated deep cycle battery that is recharged by the univolt with an isolator switch. Other elements used are a roof mounted siren and a (doppler) beam detector mounted opposite the main entry door and aimed at the beam reflector mounted on the door. The whole security system is armed by a round security key lock switch mounted on the exterior (installed through the exterior wall) at the approximate height of the main door lock. If the main door is opened the alarm sounds instantly when armed. If a window break-in occurs the alarm sounds when the beam is broken. I would not use an infra-red dectector due to false alarms cause by air currents. My experience over the years has been these beam detectors are more reliable than infra-red detectors and magnetic switch detectors which degrade over time. If you wanted to add a vibration type of detector, this may detect a trailer being stolen by hauling away (like they do in Mexico with tow trucks used to steal vehicles!)
Hope this helps....
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Mark
1984 31' Excella, mid bath, king size bed
1998 Chevrolet Suburban K2500, 7.4L/454 c.i., 4WD, Pullrite Hitch
AIR No. 2375
"You know... life is just the way it is...."
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