This is a great thread, Stan, and thanks for taking the time to do it. I have never been able to make a sunflower crop here in AL due to the deer damage. They would always bite them off as soon as they came up and that was the end of them. I don't have a field as big as yours, and they can wipe out one of 2 or 3 acres.

What I do is plant strips of RR corn and browntop millet, and then "plant" wheat a few days before the season, using the state's guidelines for legal top-sowing planting methods. By bush-hogging strips of corn and millet every week, we usually are able to get a decent shoot or 2, but nothing like what you are able to do. Good luck with it!