To Get 10 times Trick Points, Pause the Game , Then Hold L1 And Press Square, Circle, Circle, Up, Down, Down. The Screen Will Shake To Confirm Correct Code Entry.
To get more course time Pause the game, hold L1 And Press Square, Up, Circle, X. The Screen Will Shake To Confirm Correct Code Entry.
To unlock Granny, go to a level and wreck, then restart, keep doing this until it says "you ride like a granny" then finish the level playing as granny, then it will say,"Granny went for a cup of tea". you just unlocked granny!
There are alot of cheats for it but i dont want to make the game too easy for you, well, have fun!!!