I hunt on the border of Winona and Fillmore counties, and have 3 plots. We usually rotate corn and beans in 2 of them, even though the neighbors have them in their fields, and then we have a clover plot as well. This year I'll mix in some brassica and winter greens in one, and beans in the other.
Our land in entirely in the valley, but the nieghbor on the ridge rotates between corn and beans.
I would try some clover. It would be something different and it is a magnet for does. I don't have access to farm equipment, but I have had good success with Whitetail Institute Secret Spot, and Harvest No Plow.