I agree with the previous posts. A turkey can see very, very well and the slightest movement will send them running the other direction! If you aren't able to use a mouth call...start practicing so you are able to. When a turkey is close by, that is the only call I ever use. Also, as long as the gobbler is walking your direction, don't call....there really is no need to...he is already walking the direction you are needing him to! One thing that several new turkey hunters do that is a mistake is call way too much. Now I am not saying that is what you did, but make sure you aren't over-calling. Sometimes a gobbler just wont commit and it happens to us all. This happend to me a couple of days ago. I circled around this bird and got into position. A few minutes later I saw him coming from about 150 yards away and he got within about 75 to 80 yards from me and stopped and stared at me for a good 10 minutes with moving. Eventually he left. Sounds like you have a good spot and the birds are in your area. Just try the same spot again and let us know what happens (hopefully with pics)!