I've been going through sort of the same ordeal myself this season...I've located birds, seen where they roost only to watch them gobble at my calls and keep on walking...very frustrating trying to figure out what these birds want or need to move in my direction....one morning I even had a real hen 50yds. in front of me that the gobblers could see and they just kept on walking the other direction...
good luck Mike, i would say stay the course if you can't get any closer to them...I've had a couple of turkey hunts where we sat in the same spot and called and heard absolutely nothing all morning...only to go back the next day and hear gobbles @ 100yds. away and have them come our way.
Hope it all works out for you, either way.