I like the idea of using trough style feeders, but I have not had the best luck using them. First, I bought the metal one, made by Ware. The chickens knock it over easily. The roosters get their comb/wattles stuck in the scratch guard, causing it to tip. Then I bought some plastic sheetrock mud trays. I put them between the studs in the wall of the coop and used a brick to hold it in place. They manage to knock this over, also. My husband & I built some out of wood. They look great, don't tip over. I've seen the design here on BYC, they look like an old fashioned tool box with a handle. I was very happy with these, until I noticed blood on the sides & handle. The roosters must be cutting their comb and/or wattles on the handle and maybe the edge. I might just remove the handle to see if that fixes the problem. I'm curious if other people have had similar problems with trough style feeders? I really like the design because a large number of chickens can have access to feed, and eat, at the same time.