Watch out that the ribbon does not catch on your finger on the release. I have heard of that happening and ripping open the finger!
You can try affixing a large 2 gram washer or tin can lid to the bottom side of the disc, then search for it with a magnet on a telescoping rod. Word is, it will lift the disc out from under 6" and find the disc up to 12" deep, and you might not have to put your hand into the snow for retrieval.
Have fun guys.