If I was in this situation I woud put the calls on the back burner, and maybe rustle some leaves. I think that too many people take to heart what you see on all of the TV shows where they call every 30 seconds just to get the bird or birds to gobble for the camera. Granted that will work sometimes but like one of the other posters said everytime you call that bird will more than likly stop coming and go into strut. That is just my opinion.