Hey Joey:
I'm also an Iowegan and have hunted early ML season for a couple of years now. The bucks will be thinkin about some love and the does will be running from them. Those last 15 minutes of legal shooting hours are the golden time. The does will be coming out to the food in the evening and the bucks will be out to see them for things other than eating. I like to get out around 3-330 and wait.
Time spent at the range is very important to me as I tune my load and have all the confidence in my abilites for that one late in the day shot.
Randy