Surf's Up Cheats (GCN)

At the main menu, select the "Extras" option, then choose the "Cheat Codes" selection.
Enter one of the following codes to activate the corresponding cheat function:

 - All championship locations

Enter "FREEVISIT" as a code to unlock all championship locations.

 - All Leaf Sliding locations

Enter "GOINGDOWN" as a code to unlock all Leaf Sliding locations.

 - All multiplayer levels

Enter "MULTIPASS" as a code to unlock all multiplayer levels.

 - All boards

Enter "MYPRECIOUS" as a code to unlock all boards.

 - Play as Arnold

Enter "TINYBUTSTRONG" as a code to unlock Arnold.

 - Play as Elliot

Enter "SURPRISEGUEST" as a code to unlock Elliot.

 - Play as Geek

Enter "SLOWANDSTEADY" as a code to unlock Geek.

 - Play as Tank Evans

Enter "IMTHEBEST" as a code to unlock Tank Evans.

 - Play as Tatsuhi Kobayashi

Enter "KOBAYASHI" as a code to unlock Tatsuhi Kobayashi.

 - Play as Zeke Topanga

Enter "THELEGEND" as a code to unlock Zeke Topanga.

 - Customizations for all characters

Enter "TOPFASHION" as a code to unlock customizations for all characters.

 - Astral board

Enter "ASTRAL" as a code to unlock the Astral board.

 - Monsoon board

Enter "MONSOON" as a code to unlock the Monsoon board.

 - Tiny Shockwave board

Enter "TINYSHOCKWAVE" as a code to unlock the Tiny Shockwave board.

 - Art Gallery

Enter "NICEPLACE" as a code to unlock the Art Gallery.

 - Video Gallery and Spen Gallery

Enter "WATCHAMOVIE" as a code to unlock the Video Gallery and Spen Gallery.

 - Unknown

Enter "THEARTIST" as a code.

Successfully complete the indicated task to unlock the corresponding accessories for all
characters:

 - Back accessories: Get 30,000 points in Shiverpool 1.

 - Wrist accessories: Get 40,000 points in Pen Gu South 3.

Successfully complete the indicated task to unlock the corresponding character:

 - Arnold: Get 30,000 points in Shiverpool 2.

 - Big Z: Get 100,000 points in Legendary Wave.

 - Elliot: Get 40,000 points in Pen Gu North 3.

 - Geek: Get 60,000 points in Pen Gu South 4.

 - Tank: Get 40,000 points in the Boneyards.

 - Tatsuhi: Get 15,000 points in Pen Gu South 2.