Experience has taught me that turkeys seem more receptive to calling in the mid/late morning timeframe. I think they expect to gobble up some hens from the roost or soon after flydown and don't come in most times because of that. Not every turkey, obviously, as I and you have killed many turkeys just after flydown.

I don't get discouraged anymore if I don't score early. I keep covering ground until I have to leave trying to find a willing bird. In thinking about it, I believe I have taken more turkeys after 8am than before 8am over the course of the last several years.