Kelly Slater's Pro Surfer
Kelly Slater's Pro Surfer Cheats...

900 Air
Go along a wave and get in a barrel. Speed out of it then hit the lip. Do an Indy while turning right to spin faster.
Easier Speed Races
It is actually much faster to hug the inside of the track and not drift at all in Speed Races than to drift to get a boost.
Quick start
At the start of a race, hold [Up] a moment after the countdown meter reaches "1".
Various Codes
Enter the "Extra" menu, then the "Cheat" menu, then one of the following codes to activate the corresponding cheat function.
More Cheats, Achievements...