It was a big Freedom Feeder, hung low, and only tied at the top two corners. My stall doors are actally farm gates, and it was tied to the top rung. Djinn got his head between the bag and the door.
Captain I use Nibble nets if you search you can find them. I hang them high enough the horses can't get stuck in the top straps. Then I forgo the bottom strap each side has hooks. I just put an eye hook in the wall on either side and use double ended snaps. They lay against the wall and only have small openings on the front and bottom. Again they are more money but have lasted.