Are you 100% sure that the deer are bedding there? Is it possible for them to be bedding on the next door property? If not why have you not checked out the north and south side of the thicket? Up here deer will move in the day time regardless.. I have shot most of my deer from 11:00 to 1:00 in the woods. They tend to stay in the woods during the day light hours once they get pressured and normally will find a spot to look for food. So if there is another area on your land that you can hunt then it should be getting checked out as well..