1st of all, don't sweat watching that bird walk away. As long as you learned something, it will truely prove to be a great "experience." There are a couple things I would have probably done differently. Realize, that bird walked until he could see your 'hens'. He knew those hens could see him. In nature, that's more than a tom needs to do. He probably thought they should come to him the rest of the way. You had a few options in your set up that more than likely would have allowed you to bust him. You guys heard him gobbling before you set up if I read your post correctly. I would have put myself between the Tom & my decoys & made him walk by me to see his hens. Another option (& I don't know if you did this) if you set up with the decoys between you & your bird, is to always face them toward you. A tom will generally face his hens to make sure they see him. Along with these 2 set up options, I NEVER call if I can see the bird. Don't give away your position & always keep him wondering & searching. I hope this helps you & I hope you get your bird... keep us informed.