In Street Challenge Mode, enter the tournament "Certified Bonafide" and win to unlock the street legend Bonafide.
For this glitch to work, pass the ball to a teammate and do a trick the instant he gets the ball. The trick name and points will appear, but you won't actually perform the trick, thus, the CPU can never trick counter you. Occasionally, you will get a fake-out, too. The good thing is that you still get the points and it still goes toward your GameBreaker.
Start a new street challenge and skip every day. At the end you get 5,000 instead of the normal 50,000; but its quick and easy.
Do a level 3 trick by pressing L, R, and Z, then immediately pass it away. Even if your player has bad handles, he will just pass the ball away and you will still be credited the points.