Setting up in a Roosting area is no different to me than setting up in a Strutt zone or Travel rout, NONE are a guarantee! Isn't that why we hunt, becausethere is no guarantee,for the challenge?
Turkeys don't always roost in the same tree or roost area, thats why they call it hunting.
I would never shoot a turkey out of a tree! Thats not fair chase!
I have hunted in knownroosting areas, strutting areas and travel routs turkeys change their habits according to pressure etc.
Thats just me, to each his own.