whens too early (time of day) to start calling and/or rattling

[BigLick]

no reason for a buck to respond to a fight if he is covered up with does. If your ratio isnt close the bucks spend more time breeding than fighting

[Low Fence]

Rattled in dozens in Wood Co. Rattled in the same 12pt. 3 times in one day. Be ready they will pin point EXACTLY where you are, and once they realize nothings there they usually dont hang around long