Guiding for ducks and geese 10 years ago a fellow guide had a client who was whining there were no decoys out at a pond where the ducks were puddling. When ducks decide to puddle at a particular pond they come no matter what. Well the client whined so much the guide went back to the truck picked out 1 decoy and placed it at the man's feet and said,'there's your decoy'. They came home with a limit.

Nothing is foolproof to a sufficiently talented fool.