To
cure a slicing action, one must first diagnose whether it stems from faults in
your set-up or from poor wrist action during the backswing. Re-examine your
set-up with particular emphasis given to stance and posture. Ensure that you
are standing parallel to the ball's intended line of flight. Look again at ball
position, it should be left of centre in your stance. Resolving these issues
will help to cure the 'out-to-in' swing plane.
Opening the clubhead at impact is enough to cause a hook even
if the swing plane is correct. This problem centres around poor wrist action,
particularly on the backswing. Essentially, at the top of the backswing, the
back of the hand, wrist and forearm should form a straight line. Bending the
wrist back opens the clubface.
Perhaps the best way to overcome this problem is to concentrate
on avoiding bending the wrist. Practice on the range should eventually
encourage 'muscle memory' with correct wrist action becoming second nature.