I saw that show last year. It was filmed one hour north of me in Tucumcari, NM. I have been trying this trick off and on ever since I saw that episode. Sometimes it seems to be the ticket to a close shot, and sometimes it makes no difference. I have noticed a positive response from the dogs that see it. I use the largest feather from a turkey wing with a piece of thread tied to a 5/8" X 3' wooden dowel I painted flat grey.