RE: rattling question
I agree with the others when the ratio is close the better your chances are.
When you start to rattle start off light like sparring then kick it up a little don't forget to stomp the ground or shake some brush, you want it tosound realilistic this trick works durring the prerut and thru the rut.
Also when rattling you'll want tomake some snort/ wheez sound , make it sound like two bucks are really going at it and make a couple gunt sounds too if you ever heard them fighting try to mimick the sounds you hear.