It has been our experience that even if you have a free choice protein feeder, deer will still frequent other spin cast feeders. Typically the free choice feeders have the dominant does and bucks frequent them. Deer will move from feeder to feeder unless there is an over abundance of natural browse, forbes, acorns, etc. Mature bucks very seldom spend much time at any of our feeders.....they come in.....check out the does.....maybe eat a little and move on.
We have cameras at all feeders and we have observed deer at a protein feeder and then 35-40 minutes later the same deer are at a spin cast feeder. The bucks are going to go check out where the girls are.......
Similarly we have a 15 acre field planted in oats, wheat and turnips. We have seen that field totally empty and yet have deer at our spin cast feeders.