Bino,
My hounds don't bark around the house if I tell them to hush. They don't wear a shock collar in their pens. Yet, when I dump them on sign, they are going to open if they smell it. Please realize it is a totally different reason that they are barking in the timber. I wish you luck, but out of years of dealing with dogs, I am confident when I say, if your dog wants to bark on track, the pack he is running with won't convince him differently.