My dog is microchipped. She wears 3 different ID tags on her collar - including her rabies tag. In her pack she will carry her medical records in a waterproof bag. All that will help if she were to ever be off leash and wander off trail, or just if something happened and we got separated. But I was wondering if anyone here has had any experience with GPS tracking collars for their dogs, how well they work, if they are worth the money, any stories of recovery using one of these? Thanks!