We got them on snowmobiles, and there was a smart woman over on the sheep forum that had problems with her neighbors dog and her livestock guard dog getting into some fights at night. By putting GPS on her dogs she found out that the neighbors dog was going the long way around to bother her sheep. The dog had never ventured far from "his flock", so he was doing his job. Since the neighbor was in the wrong, and a dog bothering sheep can be held liable for losses to the sheep, she kept her dog in at night.
I like technology.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"