The secret area you're talking about is in the Marsailles (sp?) park. Theres a small 2x4 propped against a tree near the wooden fence, knock it down, and the fence collapses and opens into the secret area. Oh, by the way... I just got over 1.5 million on one trick! Yeah, I used the perfect balance cheat, but I believe this is the MAX for one trick... the multiplier was locked at 28.5 and the score was flashing somewhere around 54,000 when I finally landed it. It was on the bullring park - try to grind on one of the two wires crisscrossing the arena, at a VERY slow speed. You will go one way, slow, and go back and forth until the score is maxed out