RE: When is it best to rattle?
JMO..but it works best for me between Oct 20 - November 5th. Probably cause it coincides with my trip to Kansas. It takes an area where the buck to doe ratio is high. More competition between the bucks. In KY where I hunt most of the season, I don't even bother, too much out of balance. It will attract small bucks out of curiosity, but not a shooter.
I've rattled in 140+ bucks in Kansas ready to whoop someone, but never in Kentucky. All depends on the environment your hunting in.