i use them feeders all the time, we prob have about 20 all throughout the lease. just get you a 4" pve pipe and make it about 4.5-5 foot long and get a cap for it, tie it to the tree with a 2 big zip ties and put corn in it, lift it up a little where the corn comes out enough, normally about a half inch off the ground and thats it. you dont have to paint them but i like to paint em just to make em pretty, lol. but yeah they work really good.
these might make some butterflies in someone's stomach, but here is a few from a little while ago, we been watching these 3 closely to see where they travel, and i been feeding them good. lol there are 3 in both pics