When I turned 75 I decided I needed to change do to age and mobility issues. I talked to my doc who is the head Orthopedic doc for the Indianapolis Colts. He suggested I contact Graves Golf, Single Plane Golf. I did and after 11 months I hit the ball farther, my back no longer has any pain issues and my handicap went from 11 to 7. I couldn't be happier and at 78 I beat a lot of men who are 10 to 20 years younger. I would enthusiastically recommend their system.