Many times people think that tom's gobbling is a good thing when it really isnt. Bottom line, if that bird is gobbling, then he isnt doing much moving. Sometimes it is good to get aggressive, but if you continually call aggressive and he continually answers, he is most likely staying in the same spot and he wants you to move toward him. If you're in that situation, switch it up and go with content purrs and clucks. If he still doesnt come, back up 50 yards and try again. If he thinks you are moving away, it just might be what he needs to start heading your way.