A lot of people worry and wonder about their slices (or hooks). It’s very easy to get caught up into thinking that your slice is caused by one particular thing, such as an over the top move.
Guess what? You can buy the Inside Approach swing aid, come down the line or even slightly from the inside, and still hit a big honkin’ slice. How? Your clubface is open, stupid.
The physics of hitting a golf ball are relatively simple. If the angle of approach is not perpendicular to the angle of the clubface throughout impact, your ball will curve in the direction of the clubface. Slicers who come over the top and square the clubface hit a slice. If their clubface is square to their swingpath, they pull the ball. If their clubface is somewhere in between, the ball starts to the left and fades back to center.
Changing the angle of the clubface at impact is often a far easier solution than changing your swing to accommodate a new path of attack. Have an observer stand behind you and tell you exactly where the ball starts out off the clubface. If it’s dramatically right of your swing path, your clubface is open.
It’s simple physics.