I'm not 100% sure but I think Sr.'s system will prevent it from being stolen, so no need to locate it. Probably not cheap, but neither are the things you're trying to protect.
I think if you log on to Jr.s website, you will find the info there.
The problem I see with LoJack is that you are at the mercy of the police for any information. I want a GPS unit that I can personally track from our computer over the net so I can meet the culprits in person. I'm just funny that way. Waiting for the police is something I have done enough times. They seem to have their own schedule and it never seems to mesh with my sense of urgency? Hey, maybe if we put a huge Dunkin Donuts sticker on the trailer it will remain secure in any environment?I know he will appreciate all your help in this. I had heard somewhere that there is a lowjack system out there for trailers. Has anyone seen a product?