Howdy, I want to add a lightweight tracking device to my drone in case of a fly away episode. The problem is that I work in areas outside of cell networks (northern Canada). So to my understanding that only leaves a gps tracking device - like a Spot Trace - as an option. I don't mind the $120 cost for the device, but I hate the idea of having to spend another $100 per year for "service". Any thoughts or alternatives?