Keeping this in mind,we may understand that to fix a slice or a hook,there's no need for closing or opening the club face in the impact position.A good example would be a classic pull-slice shot,where computer tells us that the club face is allready closed in relation to the target.Or in a case of a push-hook shot,where the club face is actually open.Usually we try to fix such ball flights with lot's of rotation or resistance in the hands throughout the swing and make the problem even worse.
The club path is mainly responsible for our missed right/left shots and usually we develop only one repetitive habit of doing it. Better players tend to swing too much from inside out and average player too much from outside in. A good advice would be to practice opposite move in the swing -so that the avarage player would learn how to swing from inside out and turn the ball from right to left.Paradoxically,he must swing the arms and the club more to the right side (which he fears most) in the follow through swing and not trying to avoid it by pulling arms to the left!
Another valuable data from computer is a measurement of spin and smash factor.Spin shouldn't be to high with longer clubs because it costs us distance. A good low-spin number for a 6 iron is around 6000 rpm and for a driver around 2500 rpm.One of the biggest problems for average player is that he spins the ball too much and therefore loses carry distance and roll.I am always surprised when I hear the amateurs asking about the spin and how to learn it-because the computer shows that their spin number is allready too high with most of the clubs in the bag.It's fine to experiment with wedges but not with longer clubs. A good spin with a sand wedge is around 9000 rpm and depends mostly on good friction and how clean/fresh our wedge is.
Smash factor tells us how well we struck the ball on the club face and describes the efficiency of impact. The good numbers we are looking here are at least 1.30 for irons and 1.40 for woods. A rule here is:more centered the impact,the higher the smash factor.
We coaches always come back to a ball flight and with some experience you don't even need a computer by your side.My final suggestion would be that you start with a short wedge shots and see the tendency of your ball flight.All the important ball flight information is reflected in a short game and even putting.
For a better understanding of ball flight laws click here.
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