I will hunt from daylight till about 12:00. I have seen so many deer at lunch time. I killed my first deer about 11:30 on opening day one year. I seen 11 deer that morning. That tells me from experience to get out there and take advantage of it. I probably won;t hunt all day long. I will take a break after 12:00 and then go back at about 3:00. I have heard of a few on here who hunt all day on the opener. I think whenever you are in the woods you have an advantage over someone who is not.