Hey bull buster great bulls! I definitely could tell you similar stories, I killed my very first bull thanks to two guys on atv's driving by. The bull waited until he could just hear them and then crossed the road and went up the other side of the canyon, I was sitting on the point across from him and let him have it. But when it comes to the bigger bulls I have taken in closed areas where I hunt, guys sneak in there on there atv's and I could have five bulls bugling. As soon as they here the atv's it can take up to three days to get them located and talking again. One of these particular bulls we have been after for four years in a row , we named him City Bull, and he will break the 400 inch mark. Atv's are great when used correctly, I don't have a problem with them.