This past Tuesday morning was cloudy, so the one I've been after didn't gobble until about 6:15.  Got setup close on him and he gobbled about 8 times in the tree.  After flydown a few soft yelps and purrs, plus some scratching in the leaves brought him to 27 steps of me!  Now I'll be moving on to see if the other couple I had heard earlier in the season are still there.