Wave Race 64

Press B just before hitting a big wave or ramp to reduce the amount of air time.

Select expert mode and get to the seventh stage, which is Glacier Coast. You do not have to win this stage, just have to play it to unlock it in time trial, two player versus mode, and stunt mode.

While in the air press Up, then hold Down. If you have enough air, you will land it.

To change a rider name, go to options screen and select "Change Names".

To do a deeper and longer dive into the water, go to the watercraft selection screen. After choosing your watercraft, select "Custom", and put the small yellow bar all the way to the "Top End" of the "Engine" bar. Start the race and when you go off a wave or a ramp and perform a dive, you will go farther into the water and stay under longer.

Select M. Jeter, the third character from the left on the selection screen. You can execute a double backflip on almost all waves and every course ramp except several ramps on Glacier Island. This maneuver results in 2340 to 2600 points per jump.
Go to championship mode. select "Normal", then warm up. Choose the girl, go 106 mph off the jump, press Up and then hold Down until you land it.

When going off a ramp in stunt mode, turn tightly immediately before the ramp and do a flip. Doing this will give you a couple hundred more points.
Pause the game immediately after a stunt and just before the announcer speaks in stunt mode. When done properly, only the announcer's voice will be heard. A large number of extra points will be awarded for simple stunts. Another way get extra points is to cross the finish time as the clock reaches zero. Use character that is second from the right when at Twilight City or Dolphin Park. Execute a sideflip back flip. These are the easier ramps to use.

Press Analog-stick Down when you go to jump the piece of cement. If you hit it halfway through, you may not wipe out.

Obtain a speed of 110 km/hr or higher and head to towards a ramp, keeping up your speed. Turn your jet ski to the left or right while in air, press B, and turn back towards the ramp.

Begin game play in two-player vs. mode. There a fork at the first tunnel. Follow the right side for a shortcut. Note: This cannot be done in normal mode.