The driver may want to crunch brush a little more loudly, as the wind won't push scent through to where the deer are hiding. This will hopefully send deer easing out instead of sitting tight until the driver is upon them and then exploding from cover at the last second. To stop a running buck in its tracks for a quick shot, grunt loudly, whistle, or even try a snort-wheeze. Be ready to shoot, because he'll only give you a moment's pause before running out of sight. It will take a veteran bowhunting eye to know when to shoot and when to pass.