http://www.racksnspurs.com/images/feeder_bot.jpg
http://www.racksnspurs.com/images/feeder_H.jpg
http://www.racksnspurs.com/images/feeder2.jpg
It uses a pickle barrel and holds 300# of corn. The barrel has a recessed top so you need a cover. I had a buddy make one out of sheet metal. The hanger is piece of galv. pipe. I use wire cable and a hoist to get it off the ground. You will need a stool with a hole in it for the spinner, so the weight is not on the spinner when filling the feeder.
If you have bears around, it needs to be off the ground at least 8 feet.