If he hears/sees you, he's not going to keep gobbling for you. If you're running and gunning, it's like any other spot and stalk hunt. You have to sneak up on them without the animal/bird knowing you're there. If you want to call them to you, having a decoy or 2 and being camoed out helps a lot. Are there any clear cuts or meadows where you could get a little range to work with?