I agree very much with what Huntyak is saying. Down through the years I definitely gravitated towards hunting the "spot" v. hunting the "bird". (I have been hunting turkeys in Iowa since the very late '70's, yikes, I am old!)
I know the "spots" by virtue of many years of hunting the same property and/or current knowledge from scouting activities. There was a stretch once where I shot 10 or 11 birds in a row, all after 10:00A in the morning, which was long after many people had gone home since "they weren't gobbling" any longer, etc.
I think you can try to get close to them on the roost, have things go your way and be done by 6:15A and if that doesn't work, there is a morning lull between about 6:30A and 10:00A. If I didn't kill one right off the bat early, then I would take a nap and start paying close attention a
t about 10:00A again.
If you try to get too close on the roost, they may quit gobbling and/or just drift the other way, usually led by the hens.