For the feeders at my deer camp we just use the big wire spools wrap them with the great big chicken wire have it held down with steeples and we fill it with ear corn. It has worked well for us for years. The ones we have hold 200lb of corn. We run a pipe down the center of it and tie it off between 2 trees.The deer reach in grab a ear or 2 at a time drop them on the ground and enjoy. Attached is a picture.