I have never personally used antlers, but I have heard that rattling from the ground is a sure fire way to get busted. The buck will already be on alert when he comes in, he knows where the sound came from so if you move even a muscle, you are busted.

Some advise I heard was that if you are trying to rattle a buck in, have somebody on the ground do the rattling, behind your stand 30 or so yards, while you get ready to shoot. I suppose it would also work if you were on the ground and to the side of the buck' s track.