I used to use a dog tracker called Tractive but just simply quit using it as DJI became more reliable and fewer "Factory" related fly aways. When I lost mine, I was doing an Emergency Landing due to a critical battery error. I was landing about 300yds from the launch point and unfortunately on the other-side of a hill and some LARGE old oak trees. As I was landing it (via the camera looking straight down to make sure no one was under it) the aircraft descend below the tree and hill line and lost connection between Tx and Rx severing my video signal and telemetry recording. This initiated a RTH but sadly those LARGE oak trees were higher than my RTH (that was not part of my intended flight path) so the aircraft went full speed into the trees very high. We looked for hours, returned multiple times with multiple drones but never could find it or the wreckage. I "assumed" someone had seen it and simply grabbed it.
I had very good location until I lost telemetry and then all I knew was the aircraft was going to ascend and make a Bee Line back to the launch point. We knew within a few feet of where it must have impacted the trees (directly beside a well traveled walking path no less) but we could not locate the aircraft.
Fast forward 16 months later and I stopped by, just for fun and to ease my mind, and the lake was lowered for DAM repairs. I was standing on the walking path and looked in the water about 10 feet from the short in what was previously maybe 6ft deep water and WHAM! There she sits....
