Hi Neil,

The easiest way I have every found to stop this is place a head cover or length of wood two inches further away from your ball like this:

{..........Target....................{{{{

----------------------------- piece of wood etc
...............B........................Ball



F--------------------F Feet


Practice like this every time you practice for at least six weeks, if you come over the top or outside in you will hit the headcover or wood, get fall into the trap of doing it for a few sessions thinking youv'e cracked it and forgetting about it...................6 weeks at least.


Good Luck

Ian.