You probably know that pressing A+B together on a star, you can create a powerful "Smash Technique". But, there is yet an even more powerful way to smash this nearly unblockable technique. Like before, go directly under an available star. You may also go up to the net. When the ball comes, hold up, and press A+B twice. If you want, CHARGE UP (holding up while pressing A+B repeatedly) the shot before hitting.