I am no way a Hill expert, but have had pleasure of learning about the man. One of his favorite saying's was "Everyone wants to shoot like me, but no one want's to practice like me". Howard was a gifted athlete. He was a baseball player, football player, and and very accomplished Golfer. He is said to train with pulling several bows for building the muscles for heavy bows. I believe his ability came from a life long dedication and pursuit of actually shooting. He built up to heavy bows, he practiced likely more in a week than many of us do in a year. Keep in mind, he made the time to do it, it was before TV and many other disctractions we have today. He had a target butt at the door of the house and shop. Everytime he went from one to the other, he shot 12 arrows. Every time he would see game, he would practice his "air" shot, without tackle. Couple natural ability, with long hard practice, life long dedication and very frugal about proper tackle will equate to a legend.