I am 80 years old and have always hit between 90 and 95. After spending time with Mark and acquiring the right shafts and grips I broke 40 and 90 for the first time in 55 years of playing. I believe I can consistently break 90 and I owe it all to Mark. I would suggest to everyone that they spend several hours with Mark so you can really get to enjoy the game more. I wish I could have met Mark when I was 40. Thanks Mark