Knowing the effects of shaft flex will certainly decrease mistakes in your swing.
During a golf swing, the golf shaft bends as forces are exerted on it. This is called the Flex. There are many categories of swings – fluid or stiff, quick or sluggish; all of these generate force.
The types of club shaft flex are usually organized into 5 categories: Ladies, Senior, Regular, Stiff and Extra Stiff. The clubface can often misalign due to using a flex that does not suit you. This can make your swing go off the mark.
Directly or indirectly, the flex of your Fujikura golf shafts impact 3 vital things in a swing: accuracy, direction and distance.
During a golf shot, the clubface must be perfectly in line at impact to maximize it. The angle of the clubhead changes as the shaft flexes throughout the swing. A flex not in tune to your swing will surely lessen the chance of having a square clubface when making contact with the ball.