LESSON 2: Get high. "Once again it shows how important it is to get elevated," notes Hellickson. Bang horns from a tree stand or from a ridge, hillside or hump where you can spot bucks coming a long way out. Almost all of the time, bucks approach rattling sounds from somewhere downwind, trying to sniff out the fighters. Hellickson's study confirmed this but revealed an intriguing twist. After first moving downwind toward the cracking and grinding noises, three out of four bucks circled back to a spot upwind of their original location. Furthermore, the average distance a buck moved 30 minutes after responding to a rattling sequence was one third of a mile. Two bucks walked nearly three quarters of a mile, while two others moved very little.