Tip From the Archives
You know you are squaring the clubhead at impact but you still seem to alternate between pushing and pulling your shots.
You are likely approaching the ball too far from the inside or outside of your target line. Work on swinging along your target line with a consistent swing plane.
Set two golf clubs on the ground about one foot behind your ball. Set both clubs parallel to the target line so that they are two inches left and right of your target line. Grip an iron in the middle of the shaft. You want the butt of the club pointing between the two clubs on the ground during your backswing. Keep the butt of the club pointing along this line as you begin the forward swing.