Golf is about two variables, distance and direction. The whole game is about these two concepts and every golfer is trying to improve one or the other (or both). I know that a stiffer shaft improves direction and gives useful feedback when misused. With the Traditional (stop at the ball and throw the club head) golf swing, the stiffer shaft, will not be very forgiving and not feel* as easy to hit as a softer flex. Now, most seniors have been told that they could get more distance if they used a regular flex or senior flex (or A flex with women). What those flexes do, is give a whip effect to the club head, that may or may not give a little more distance (depending on timing**). My experience is, they mostly make the misses more dramatic and will usually sacrifice direction. *Remember golf is about distance and direction, not about feel. The shot will feel great when you impact the ball with the shaft in line with your front arm and hit the sweet spot of a square club face. Repeatability comes when there are less variables and that usually means less movement and less movement feels terrible (until it produces awesome, repeatable, solid shots and builds confidence). **Most golfers will throw the club head too soon and the whip effect happens before the club head gets to the ball (reducing club head speed into the ball), and closing the club face for a pulled, hook or miss hit.
Move Less ... Get Good! DUPLESSISGOLF