We had the DNR crop depredation specialist out many years ago to assess deer damage on our ag fields. He mentioned that "cross hatching" the end rows of corn might slow down the deer, as just like most critters, they take the path of least resistance and don't care to wade through corn. We decided not to get the depredation tags, hunted hard with friends for a couple of years to lower the damage.
Thinking back and to cut to the chase now: If you had a pre-emergent herbicide and thus wouldn't need to get back into the field after planting, do you think planting the plot at right angles (plant one direction, then do a second pass at right angles) would slow the deer down on consumption of the plot? Could still probably do a spray clean up and run down minimal corn. Might need to back off on the plant population a touch. Just spit balling here.....