*Looks like the video did not Post because the youtube URL. So I will post the demonstration video separately.* This is the feeder we are using, I changed the materials a little and added an extra swivel hole. Swapped the chain for braided steel cable, 1/4" dia Pex tubing and a 4 gallon food grade bucket as the lid is easier to get on and off. It is simply a hole drilled into the bottom of a bucket with a stainless steel eye bolt and hardware. I used a nylon lock nut on the bottom to keep it from backing off with repeated use. It cost like $10 to make. I fill it up about 3/4 and it lasts a flock of 13 about 2 weeks. A 50# sack will do about 3-4 refills.