Rusty,
I have a coworker who hunted in Montana a couple of years in a row for elk. He hunted from the top of an ATV. He was disgusted because none of their group got an elk. I told him that he needed to get off the ATV and walk (in an indirect way). He didn't think the ATV was a problem because he had seen a few deer.
My experience this year in Western ND was that if you got at least 1/2 mile off of the road you saw mule deer and they were actually about 1 mile off the road. When you watch all the stuff on TV about ATV adds, it makes you think it a good way to get animals. I guess that's fine with me as long as they stick to the roads/trails, because they leave the deer to me.
Jason