Thanks guys!! I must admit, when he turned away from the grunt tube, I thought it was done. What made me think of the rubbing thing I'm not sure. Once in IA we were trying to rattle a good buck we could see on the other side of a field, he wasn't having any of it. My bud said rake that tree with the antlers. I did and he came 20 yards before some pheasant hunters blundered onto the scene.
Maybe it is more agressive than grunting, I don't know, but stow it in your bag of tricks. The last ditch effort paid off this time!!