-Plankton is the best character. Unlock him by winning Cup 3 on medium mode.

-Use the boosts by double tapping up on the d-pad.

-Get the start boost by holding A after the "1" appears.

-There is a cheat to unlock all characters and tracks in the game. While on the main menu, hold the R button down and then quickly press Start, Select, L, Select, Start. If done right you'll hear Stimpy say "Oh Joy!"