By the time I want to roost I have patterned a few birds while they have been feeding.

I then go sit near likely roost trees as I have also scouted those. I look for tall white pines with white oaks near by as I am in the midwest. I look for broken branches, feathers, poop, typical areas a bird might be on a limb.

Once I find those I will sit within earshot (approx 100 yards).

My rule of thumb - I hear birds fly up from 7:30 PM to 8:05 PM (is real dark then) the deeper in the woods the roost tree the darker the woods gets earlier. I go find a spot to relax around 5:30 to 6 PM.

I do not owl hoot but do note if I heard birds flyup. I count fly-ups.

To me just knowing I am close to birds is really all I need. I f I hear no fly-ups then I will work towards birds as I pick another area in the morning and let the Tom tell me where he is. I then will move as he gobbles trying to get as close as I can (less than 80 yds - like to be 50) I don;t make one call but let Tom tell me.
Once I have decided I can go no farther and I set-up I let him gobble to which I respond to take his temeprature - what he likes to hear. Some may be soft slow clucks only to others I cutt to and cutt aggressively. Each bird is different. And sometimes I have to get up to move - But all that experience comes with hutning them and making mistakes!
I have made a ton -

In other siturations I know where the birds like to feed and will set up there to wait hours on end.
I scout to develop a pattern. I try to let the bird tell me where he wants to be and then be there before him.

JW