Enter the options menu and enable "Kid Mode". Enable the master code to unlock the cheat menu, then enable "Perfect Balance". Start the first level and go over to the halfpipe. When you are about to fly into the air, press A + Up, Down, Left, or Right to do a trick that will give you a lot of points. Only hold it for a few seconds or else you will fall and not get all of those points. When you only have about a minute left, go over to the far side of the halfpipe and onto the edge of the screen. Then, do a grind to the left side and do not press anything. You will go around the level area and will fall off at the starting ramp. You should have about 20 seconds remaining. Do it again. By the time you reach the starting ramp again, time should have run out and you should have a very large score.