RE: locator calls?????
Try a screaming hawke , a peacock or even a firecracker , yes thats right I said a firecracker.
Something that they are not use to hearing in the woods will make them " shock gobble " I've tried the firecracker in the evening hours just before sundown.
It works great , they'll " shock gobble to it every time and I know where there roosting , it might scare some of the other wild life but what the heck your trying to locate turkeys.