Take a turkey fan, either a real one or a manmade one, and use that to hide yourself, and slip up on them. It works, I've seen it in action. As far as calling goes, once they start coming, I judge their 'temperature". If he seems hot, I will keep him excited with some calling. If he seems a little hesitant, I'll softly cluck or even be quiet. The hard part is learning to judge a turkey's behavior, as each one will be different.
Not on public land and not in States that allow rifles to be used.
