One thing that has worked for me is that I use antlers from 2 different bucks (4pt,other 5pt). Because they are of different mass they seem to have a little different tone than using antlers from just one deer (sounds different to me anyways). I've never had much luck during the pre-rut when the rattling is heavier but I have had quite a bit of luck in early to mid Oct. by just tingling the points as if the bucks are just lightly sparring. I've had a number of bucks come in trying to see what is going on.