I plant a lot of food plots mostly to feed deer thru late fall and winter. Small grains, clover, radishes, turnips chicory; a blend to provide high nutrition for as many months as possible. They range in size from 3 acres to about 10 acres and we definitely hunt them. In some of the bigger fields I place a spin feeder with corn close enough to a blind to help assure a good shot especially for some of the kids and elderly that hunt with me. These are prime spots to help manage population and doe harvest.
I think I can safely say that a deer never enters the field just to come to the corn. They come grazing what's planted and some will ultimately make their way by the feeder. Some never make their way to the feeder. Everyone of them come to the field for what's planted. Attraction is attraction at least on my farm. Consider that for whatever it's worth.