I have never rattled, I have so much convidence in grunting and using 'the can' that I never felt the need to rattle. I can't count the number of bucks I have called in with 'the can' alone. I feel that call even more effective than grunting sometimes. I will say I have never been able to get a positive response from the snort/weeze.
Took the day off as I have been traveling a lot and have not spent much time in the woods. Saw a small doe first thing. Around 7:30 I grunted a couple times and then hit the 'can'. A couple of minutes later I saw this buck enter the other side of the field I was hunting. When I saw he wasn't going to come close enough, I hit the can once and he came to the tree on a string. He gave me a 15 yard broadside shot that I caught both lungs and the heart. Not a monster by any means but I am happy to get him and start back duck hunting. This is only the start for things to come!