Hunting without decoys may be a good option. They don't necessarily have to be looking away from you, they rarely will be. When you're sure he's coming, stop calling. He will come in looking, have the gun up facing where you think he will come from. Of course they don't always come in like you think, but it's a good place to start. You want to minimize gun movement to line up the shot. Sometimes it's easy, sometimes you have to move it like molasses in the winter.