I mean these operations already involve heavy equipment and some basic "farmer" mechanical hacker knowledge which is usually quite impressive. It's not really

I mean these operations already involve heavy equipment and some basic "farmer" mechanical hacker knowledge which is usually quite impressive. It's not really that hard or expensive to create a faraday cage trailer, or simply jam GPS/Cellular (assuming pre-knowledge of the types of trackers used) until you can safely remove the devices. I think it's a good idea to put one in every 10th hive just to make things harder and raise the cost of the theft, but I doubt it would really have a large effect on these operations past the first bust you get using the technology. Cameras and and various real-time alerts (wireless) on access roads and around the site are probably going to be a lot more effective as deterrents in the long view. Hard to evade a few motion detectors even if you know they exist, so long as you were not the one placing them. This of course assumes law enforcement response times are reasonable - if you get an alert that the site is being disturbed and you confirm on your hidden camera, the police still need to get there within 15-30 minutes to have a hope of catching anyone remotely prepared.