Play Dolphin Park in stunt mode and go through all of the rings and preform the following tricks:
~Stand&Do flip back on to jet ski.
Hint: Find out how to do these moves in warm up mode first.
Then restart the
game and go to warm up and hold down on the Anolog Stick while selecting
your character.
Go to the practice
mode and don't miss a single ring. When you are done get out to the main
menu and do a 360 on the joystick 10 full times. If you are successful
you will hear a load laugh. If you want to ride different sharks than listen
at the main sceern press a,b,a,a,a,b,b,start.then you can pick what shark
you want to ride.
In the player selection
screen press a,b,a,z,b,r,l,a,a,b,z,l,a,start. This cheat will let you ride
a small yellow sub (Twilight City is the best course to use it in).
To got a lot of points easily as soon as you complete a stunt and right as you land in the water, pause the game.