The etnies park in Lake Forest has limited BMX access. They're throwing a BMX contest on 12 November so save that day to ride the shit out of the park. After being denied access to the park to take pictures twice we were asked to donate prizes to the contest. We denied this time.
Anyway, if you're living in the area or have always wanted to ride the park, the Fall Classic is your day. If you forget to pre-register it's $ 25 USD to enter. Sign up starts at 8am! 25 riders maximum per class. Click the flyer for more info on the several classes and for the full address.