Now I don't know anything about the mavic except for the dozens of videos I've been watching, so correct me if I'm wrong. I seen where someone lost there phantom, but his iphone dji app kept a flight log up until the loss/crash. The owner was able to narrow down the vicinity of the drone. He had one of those small bluetooth (pet, key finder) on his drone and was able to track its exact location. These are much cheaper than a gps tracker. Would this be a realistic and accurate way to find a lost mavic?