I used to be in a club with a guy that shot a decoy over in Georgia one time, it was during the day and he drove past the field, parked and slipped through the woods back to the edge of the field and blasted the decoy. GW's never saw him till he shot, they couldn't get him for all the good sheit, only got him for hunting on private property, 250 dollar fine.
My wife at the time was a commercial artist, we got a huge piece of cardboard and we had her draw a huge buck on it, and then we cut it out. We took the cardboard deer and put it in some bushes about 150 yards from his stand late on Friday night, he shows up Saturday morning and as soon as it got barely shooting light, we heard him blast it three times. A few minutes later you could hear him mf'ing us a mile away.