(quoted from post at 16:44:45 11/26/13) The problem with recovery of off-road equipment is not a new one, anywhere. Unless there is something to "go on", law enforcement probably just does not have any direction to investigate. Cops very seldom get the opportunity to check serial numbers of equipment unless they develop information that leads them to believe that equipment is stolen. Cops just, for the most part, never come into contact with off-road equipment.
Back when I worked vehicle thefts, we recovered (in one shape or another)over 90 percent of cars and pickups stolen in our county. On the other hand, I doubt that we ever located more than 10 percent of the tractors, farm equipment and construction equipment that was reported stolen. Those reported stolen vehicles from that time that had serial numbers are STILL probably listed as stolen in NCIC all these years later.
It could be that your missing equipment went to Mexico or some other far away location--maybe that is what is happening these days. But I would sure keep my eyes open and looking around your own area. You might see it somewhere, and you, as a private citizen, could probably do more toward verifying that what you see is, or is not your missing loader, than a cop could do. The cop has to follow legal procedure--probably get a search warrant if he can develop probable cause, to even go on private property to LOOK at a machine. I would just go look at the machine and if it is your machine, then call for law enforcement and let them sort it out. There might be an interesting story about how the machine came into their possession. But in the end, you would most likely get your machine back.
I always wished there was a good way to improve our recovery rate for off-road equipment, but never came up with a very effective plan. We just never had much contact with the stuff that was not going down the roads. Good luck!