You need to set up where he can't see where your calling from. It doesn't always work out that way though. If possible, try to get a hump or some kind of rise between you and him, prefferably when he sticks his head up he will be in range. It is very hard to call them up if they can see where you are calling from.
I think the mistakes some begginers most often make is setting up on a bird in a spot that you, the hunter, can see a long ways and see the gobblers approach. That is a no no, if you can help it. That is usually when you hear somebody say "he hung up at 60-80 yards." He could hear that hen calling to him, and could not see it, so he just stood his ground. Plus, in nature the hen goes to him anyways. We are pretty much breaking the turkeys rules when we call up a gobbler.
If you can see the gobbler, I suggest to not call to him. If you can see him, he can for sure see you. He also can pin point your location in 2-3 clucks. so if your setting there looking at him and you call, he will immidiately have you pin pointed, probably realize there is no hen there. He will either spook, or strut and gobble until he sees his hen. Lots of times when this happens he calls up a real hen, and it is usually over. When they hang up, just quit calling. He may loose interest and walk away, or maybe he will wonder what happened and come looking for you.
There are always exceptions, you never know what will happen.
Saw some of your pictures on the picture forum. looks like you at least have some turkeys to shoot at.
good luck to you.
