At Half-Ball the cue ball moves at 90°. If you are not sure where the cue ball will go after a double kiss, remember that if you hit the object ball at half-ball the cue ball will move at 90° to it’s original path. To get maximum speed into the cue ball (for minimum effort) address below centre and use stun. Playing with top or screw slows down the white. These shots can be played from many different positions - look out for them!