i wont grunt when i can see one...i'll wait till hes about out of sight before i THINK about it...same thing with turkeys...if i can see them, i aint callin!
i also bling grunt and rattle when the seeking and chasing starts heating up...ive seen decent success with it...had a couple charge in like you see on TV...each year its getting better as our herd is balancing out and the rutt is getting a little more intense...