The best advice I could give you for late season birds here in Tennessee, or anywhere else you're hunting Easterns for that matter, is to loose your yelp. By the end of April they've heard it all. They can tell you the brand and model of caller you're using. Do your home work and get in close to the birds. Get in close and cluck and purr. Maybe scratch the leaves a little but unless you get a really hot bird, don't yelp at him. If you do, he may gobble at you but he'll probably go the other way, gobbling when you yelp. I call them runners. They will run you to death on the ridges.