Find hidden board park
Go to name entry screen at career mode and enter "evrsprk" and you will get the hidden course.
To get more people, you have to complete the Challenges eg. C1. I got Tara, Nate, Replay, Max and 2 more pro's I don't remember. I hope these help. They have better stats than the first two pro's do. Even the new Amateurs do Finishing all hard downhill gates will unlock Gray, Burg, Le'Monjello and Tex
Get triple Crown
Finish all events to get the Triple Crown Event
GameShark Codes click here