What he said! Less is more in my opinion. I like to set up in the travel corridors as well and if I'm not seeing anything for a while later in the morning of mid-day then I'll rattle a bit and I give plenty of time in between rattlings, 15 minutes at least usually to give a buck time to work their way around toward where he heard the sound since he usually circles in downwind. I'll start mid October and try it til mid November. Ideally, though, I'm not rattling, just set up where I can suprise a buck. It's more if its slow and so why not. You usually won't scare them during the rut. You might make them curious or it might have no effect or they will come charging in hopefully.