We don't have a field larger than half an acre. What I have observed on the one field that had a corn person supplying it is the deer would come out, eat corn for 5 minutes or so, and then eat greens. No way around the fact deer need green plant material in the winter to offset the hard mast.

I brought a wildlife biologist out this year, and her suggestion was to severely limit human traffic on green fields. If you put corn out on the ground, then you have to go in and add more at minimum weekly. That's additiona pressure on top of hunting pressure, and usually the person puts a camera up as well.

What I have found on spin feeders is it takes a couple years for the bigger bucks to hit them. I just hate feeding coons.