I've called a bunch of turkeys to decoys and the best set up I've seen is a jake behind a hen. It drives toms crazy.
Strutters work ok if you know you are on a very dominant tom, but they also scare a bunch off at times. That's the good thing about the jake & hen set up, even two yos will come in mad.
That said, sometimes it's best to go no decoy at all, especially in a high pressure area.