I was apprehensive going into this session but Jon quickly made me feel at ease. He explained the process we were going to follow for the afternoon which made complete sense to me. It was fun to see how by changing shaft parameters and club heads he could help me gain more yardage and control. I was amazed at the results. Numbers don't lie. I now see why pros are so good from working with this kind of technology. I will recommend this to my golf buddies. I would have purchased a new set that I now know would have given me no improvement.