I just saw a video by the noted RC blogger "RCSchim" that demonstrates a cool device called the Marco Polo. It looks quite promising, and could be a very inexpensive (~$200) insurance policy for the more adventurous among us. As for me, I'm undecided, as my flights tend to go mostly straight up and back down. But if you're operating over dense brush, trees, or other difficult terrain, it could be a very good investment. http://eurekaproducts.com/rc-model-tracking-and-recovery/ Here's RCSchim's video demo.