id go out and sit with my back to the tree and call...and if you have no response then move to a different spot. or you can just scout out for them and stalk them.. and move into a spot where you know they will be moving too and set up and wait for the shot. thats my favorite type of hunting. is stalking..it takes skill and time and give you one hell of an adrenaline rush..at least it dose me anyways haha