This unlimited two player mode is great for practicing and finding shortcuts.
Extra Nine Second Boost on Lake Powel
To get the extra nine second boost you'll need at least half tank of boost then when you are at the dam there is a ramp in the center use boost and go off it. Hold boost and you shuold get the boost on the railroad track
Race as the Tiny Titanic
You have to beat the easy courses in the top three to get the medium courses.
After you have the medium courses then beat them by placing in the top two
to get the hard courses. Beat these by placing first in all the races to
get the bonus tracks. Beat the first three bonus tracks in first and you
will be able to race with the most awesome boat in the game. The Tiny Titanic.
Special Tracks
Beat all the beginner tracks and when it gets to the main menu agian hold the left trigger and press A, X, Y, Z.
Turbo Start
Hold left trigger while game is loading. As the number 3 fades release left and hold Right trigger. As the number 2 fades do the opposite (release right and hold left trigger). then do the opposite again as the number 1 fades (you should end with right trigger held.)
Unlock Everything
Start a new game and race one of the Beginner tracks. You must place well enough to enter your initials in to the high score listing. Enter:
?PB
You will unlock every track and every boat including: