Not to be critical but I'm not sure I understand your strategy.
If you are going to lose a disc you like anyway, why not throw it into a lake?? Then you get the fun of one last shot before it sinks forever. Just letting it fall out of your bag and walking away seems to provide little entertainment value. Unless, of course, you get off on that kind of thing....for some unknown or demented reason...or whatever.
Wow, Todd White and Mark Ellis came out to harass me(though I knew it would happen), but if there is even a small fraction of a chance of getting it back I will suffer the many hours of ridicule from my friends for crying in public. :)
"many hours of ridicule"
Dude, you need to look into a speed reading class.
This is not ridicule, just helpful advice. So I have an idea that I'm not sure anyone has tried but it might work for you. Take all your discs and glue them together. You might lose some glide but they should be easier to find.
Sounds like you have NO luck! All you can do is buy more plastic and hope someone cares enough to give you call. Or you can go with my method and wait to see someone throing your disc, then tackel them as hard as you can.