Psylocide's advice is right on the money.

As for looking for a roosting area, I do that middleof the day, looking for droppings under the trees. I have hunted turkey for decades and one of least successes that I have had is "roosting" a goobler the evening before. Either I am not good at it or the fact that where I hunt there are probably 1000 acres or more of great roosting area making locatikon a difficult task. If you do located birds roosting the evening before or happen to hear them in the predawn, like Psylocide says do not move in too close. You'l leither bust 'em out or alert them to your presence and a fly-down they will pitch away from you.

Also if you come across a Tom gobbling in the roost early a.m., be mindful that how close/far he sounds is related at least to some degree to the direction he is facing when he gobbles. I have found that a roosted gobbler is closer than I usually think that he is.