I'm not a fan of hanging feeders. As redneck farmer stated, they can cause messes.
I place my plastic feeders on scrap 2 x 4 pieces at about mid chest height. With the chicks, the feeders start out directly on the ground or floor level. At about 2-3 weeks, they go on one layer of 2 x 4 scrap (about 1 1/2 inches high), and then taller, adding layers as the chicks grow and mature. For my mature hens, the feeders are on bases about 6 inches off the ground. When I have mixed sizes eating from the same feeder, I place a couple of wood pieces on the ground for the short ones to stand on.