I like to hunt high in the AM , as the sun breaks and the ground warms thermals rise, carrying any scent up, Bucks will cruise ridges in hopes of catching scent of a doe thats getting ready, as the evening comes, go low, down in the bottoms, thermals fall as temps fall. Best advice I have not seeing a pic of the location, was the cornfield stripped of all corn or just knocked down? that could change everything.