I buy the pheasant wings (pack of 6) from Cabelas, which is cheaper than the bumper that is already fitted with pheasant feathers, and cable tie one on to the canvas bumper. My dog loves them and is very birdy now. He was also gunshy, so I've been using a dummy launcher that uses .22 blanks. In less than 2 weeks and shooting only 5 or 6 a session per day he's gone from staying 25-30 yards away from me when I launch a dummy, to sitting right by me. At the sound of the shot, he's off like a rocket to retrieve the dummy, so I'm very pleased with the results of a feathered bumper combined with a launcher.