Another thing that works with feeders is to put a large eye screw in a rafter and attach a long chain with one of those repair links that screw open and shut. Use a double ended snap to hang the feeder from the chain and adjust the height for different size and ages of birds. Having it just low enough for them to reach the feed keeps them from scratching out so much.
I buy those cheap $1 clips. They seem to work well. I use them on both ends. I have J hooks in different locations so I can move them around. Your way works well too. Though rather than buy chain I use rope from bales of hay. BUT now that you mention it the chain idea I've used for heat lights over the brooder. Now I'm thinking it will work better too since I'm now hanging waterers for the broody hen and her chicks. I will have to raise it as they grow.
I'm glad you mentioned it. I have unused chain, since I'm not using the brooders.