The cause of the slice is not guess work.  This  video takes a look at how the trail arm and shoulder need to move in order to perform at the highest levels for golf and many other sports! 

Throwing a football, baseball, tennis serving, side arm pitching and my favorite… skipping a stone across a lake!  What do these have in common?  The trail shoulder/arm always rotates away from the target during transition.  Slicers will rotate toward the target in transition.

Please also watch the Slicer’s Wrist Angle video for the complete understanding.