Nothing works every time, but when it does, it's like magic. Try this. If you know for sure where he is roosted, either from gobbles or from seeing him roost, do some light tree yelps as early as possible, but some distance from the gobbler. As soon as you do those, and if the conditions allow, then move 40 to 75 yards closer to the gobbler and set up. He may fly down right where you are to start looking for the hen that tree yelped farther away. Hope that makes sense.