Really at any point after the turkeys hit the ground I think you can tune it up a little. Each situation is different and you kinda gotta get a "feel" for how the turkey responds to your calling. But my rule of thumb is that if I call while the birds are still on the roost, I keep it very soft. As soon as they hit the ground it's whatever it takes to bring them in. Works for me sometimes, and then sometimes it doesn't. Hope this helps. Good luck.