I've been using these occasionally over the past couple years. Didn't get to really put them to use much at first though, because too often they were getting wiped out in recovery failures, etc. And a lot of times, I simply didn't bother to attach one -- too lazy, too much in a hurry, etc.
On my recent Nevada trip I finally had a chance to do quite a bit of flying, and used these on every flight. I am now completely sold on these little gadgets! Quick and easy to use, cheap, fairly reliable and saved me lots of search time. They don't seem very loud, but can be heard from an amazing distance away. In some cases I would estimate over 500 feet!
Now I just need to order more. Killed a couple during this trip, but also I want to have one for each payload and each rocket. So far I've only been using them on the payloads. Would have saved me much more time if I'd had them on the rockets too -- and more importantly, I would not have lost a rocket including a
29mm AT motor casing.
Thanks Doug, for a great product! I'll be putting in an order as soon as I get caught up on all my post-trip stuff.