Used and still use, a broadcast feeder. I started by mixing one bag in 350 lbs. Then, gradually add more protein at each re-fill. It takes a while but they'll end up eating it all. It's getting into the hard times for them, the bucks are trying to recover (still) from the run and the does are mostly all preggo. They start looking for the mineral mix that makes up the protein.
Pay it forward - Kids are the future.
Rifles are similar to boats and young women...there's no end to how much money you can pour into them without making them any more useful.