What I plan on doing if I ever find some is hot glue on some plastic 3d cammo leaves.  Heck, I should go to the craft store, it'd probably be alot cheaper.  Anyway, I think a couple dozen leaves hot glued on (or however you're supposed to attach them) would really hide the shotgun's silloette, making it look like a leafy branch.  Then I'll remove them before pheasant season starts next fall.  But for coyotes this summer, hmmm, might be a good addition to my cammo.
later,
scruffy