I think it depends alot on the buck to doe ratio of an area. I have rattled in only one buck here in florida. This was on the back edge of the peak rut on a Primitive weapons only area. This area has few deer but the buck to doe ratio is pretty close during the rut. I saw the buck step out onto a 30 yard wide logged out strip about 200 yards from me. He proceeded straight across but stopped when I clashed my antlers together. He stood there looking for about 15 seconds. I lightly clanked them again and he started heading my way. I shot him with my muzzleloader when he was about 20 yards from me.
I have tried it again on other occassions with no success. Grunting has worked pretty well though.