The first known golf tees -- hand-built piles of sand -- did nothing to help golfers hit the ball straight. Even modern tees aren’t supposed to affect the ball’s flight, according to the Rules of Golf. In casual play, however, a golfer who’s prone to slicing the ball may wish to try an anti-slice tee. This device is basically a standard tee plus a curved plastic flap that rises from the tee’s crown to cover about one-quarter of the ball’s surface. The flap is designed to prevent the club head from imparting a sideways spin on the ball. That sideways spin causes a slice, according to PGA professional Mark Blakemore.
Place the tee in the ground as you would a standard tee.
Make sure the anti-slice tee’s curved flap covers the back of the ball. The flap should wrap around the striking surface of your ball to act as a spin insulator.
Play your tee shot as usual.