Brett took his time is working with me to really get to the bottom of my swing dynamics and how my swing works relative to the driver. we hit a ton of $@!#% trying different heads and shafts to isolate the best combination for me. I was surprised how quickly he identified the right shaft for me, which reduced my dispersion rate to something i could hit straight every time. we went from missing fairways by 5 yards to missing the center of the fairway by yards at worst. the whole process is worth the time and expense if you want to be sure your clubs are optimized for you. it's amazing how after playing golf at a fairly high level for 30 years, i still learned so much from Brett. Its not an inexpensive proposition but for all of the time and money i spend on golf i cant see not doing this to make every shot and every moment on the golf course count!