Use a jake with the hen to get thatbig boys attention. He doesnt want his hens hanging with the little boys so if he sees it he will usually come in quickly.
Also if you are hunting with a partner, and you are both calling, use two hens at first light when he is still on the roost or just on the ground and both of you cluck and soft yelp at the same time. That worked for me this pastspring and I killed a nice goobler.