Every stadium in the game features a large electronic screen, which is called a Scoreboard.
If you hit the scoreboard, you will be able to trigger a skill attack against your opponent.
Skills are shown as an image on the scoreboard.

When a skill is triggered, the scoreboard is turned off for a while.
Hitting a scoreboard that is turned off does not yield any points, and skills are not triggered.
Therefore, hitting the scoreboard more frequently and earlier than your opponent will give you an advantage during gameplay.

※ The "M" shown on the screen during missions are a feature for succeeding in missions and does not trigger a skill attack.