There are some significant advantages to using a strong grip. Lets have a look at some of them.
One of the most difficult aspects of the golf swing is the turning over or rolling of the forearms through the hitting zone. It is a very difficult movement to time correctly and one of the leading causes of pulled or pushed offline shots.
The basic mechanics of the golf swing dictate that the weaker your grip, the more you have to roll the wrists through the contact zone in order to square the club face.
It thus makes a lot of sense to play with a stronger grip. The stronger your grip is, the less you have to roll your forearms through impact.
Strengthening your grip in this context does not mean gripping harder, it means releasing your grip, turning your hands in a clockwise direction and re- gripping once you have done that. When you look down on your hands, the more knuckles you can see on your left hand, the stronger your grip is. Weakening your grip means to turn your hands in an anti clockwise direction then re-gripping the club.
It is interesting to note that most of the top competitors in the long driving competitions use a strong grip. This is a discipline where accuracy is vital. Playing with a strong grip will certainly add power to your game as well as accuracy.
Try strengthening your grip gradually and see what happens. Play the ball a little further back in your stance than you usually do. Also develop a more in to out swing path if you can. This will help counter the slight draw effect your new grip might produce.
Once you have found a new grip you are comfortable with, try it on a variety of shots from your long irons down to your wedges. You may need to go a little weaker when you need some height from your wedges.
Remember, all grip changes are difficult. The longer you have played the game with a specific grip, the harder it is to change it. Your new grip will feel weird and uncomfortable for a while as you settle into it. Persevere and give it a real chance before abandoning it.
I find it helps to acclimatise to a new grip if you concentrate on watching the ball a address and avoid looking at the club face. As soon as the club face is out of site in the swing itself you will forget to feel awkward with your new grip.
If nothing else avoid playing with too weak a grip. You will never develop any real power with an excessively weak grip and your accuracy will be compromised. You will always be a fader/slicer of the ball.
Lastly, if you do decide to strengthen your grip, expect your follow through to be slightly different to your old one. You will find your arms and hands following through slightly more in front of you than around and behind you. The club will end up closer to your head than before. Its not a problem, don’t exaggerate it.
If you make any these suggested changes do it gradually with small changes and evaluate carefully before adopting any change. Make sure you give it a chance though.