The connection between the hands and clubhead is critically important. After all, it’s your only true linkage to the golf ball, meaning any slippage or loss of traction can lead to devastating shot results. And that’s no matter how well you swing it!
So, check your grips routinely for wear and tear, and/or any loss of tackiness. Furthermore, make sure your grips are fitted properly for both your hands and your golf swing. Typically, smaller grips are better for smaller hands, but they also aid in helping the hands rotate through the shot. Fatter grips have the opposite effect, and can actually lessen the rotation of the hands to prevent excessive hooking of the ball. Experiment with different sizes and see what works best for you.
To get a better hold of how firmly you should grip the club, first examine how well your hands are functioning at the top of the swing. In the photo above, you can see that the back of my left hand is flat, the clubshaft is on plane (it’s hidden behind my hands), and my wrists are fully hinged. Now, if I grip the club too firmly, my wrists won’t hinge enough, meaning I’m likely to release the hands too soon through the downswing.
If I grip the club too softly, not only am I likely to regrip and lose the proper club position, but my swing plane is going to suffer, since the shaft is likely to droop behind or in front of my hands.