Solid Plane = No Slice
An open face at the point of contact can cause a slice. So, too, can a faulty swing path, even if your clubface is square to the target at impact. Slicers’ swing paths tend to come too much outside in (hookers, vice versa). All golfers need a path that comes just slightly from the inside. Try the Box Drill. Take the top half of a golf ball box and stand it on its side. Align the box parallel to your target line as shown. Strive to groove a path that allows the shaft to pass just over the box. For slicers, set up the box on the same line, but just forward of the golf ball. Don’t hit the box!
Hookers need to stop the clubface from closing too soon. To do this, adopt a thumbs-down approach to impact. In the photos at right, you clearly can see the red side of the paddle with both my thumbs pointing down toward the ground. This type of movement slows the closing of your clubface, thus eliminating shots that curve to the left. In the second photo, the blue side of the paddle shows. This thumbs-up position is what slicers need to attain (a closing of the clubface).