J wag, if you know for sure that the turkeys roost in that area, then by all means ,go opening mornin. I can tell ya for a fact, they will not gobble on the fly-up at dark every time. as a matter of fact, down here in south Ar, very seldom will they gobble at dark. that' s the reason I hardly ever try to roost em anymore.
be there before light opening mornin