I am very flexible. I sit and wait at first to get a feel of what the birds are doing. If they are kinda close, I sit. If they are coming closer at all, I sit and wait. If they are far off and not moving, but gobbling, I move in on them without calling. If I heard a gobble and called a bit, I will sit quietly for awhile before I move.
I got one at Salt Fork once that gobbled and went silent. It walked in on my left and all I heard was a spit and feathers dragging in the dirt. I knew what that sound was. At 25 yards I waited for for him to show his fan and butt so I could move the gun. When the head was visable again, well.
I had one that would gobble constantly at a far distance. I decided to go after him. (public, Upstate NY) I went through a long field, across a 2 lane road, down an embankment, through a flooded pine grove, across a stream, across a small canal via a fallen tree trunk and found the bird. I laid down on the ground just on the other side of the canal and called him right in to 15 yards. It was a cool NY morning and each gobble produced a plume of steam out of his mouth.
All of my other birds were somewhere in between these two true stories.