At Castaic the secret is to get there before 9AM. After that it gets to suckin'.
Somebody asked about pyramid's launch ramp.... It's a much smaller ramp, it's not as long, it's half as wise (if that) and I wouldn't be able to gauge the grade correctly... However, you can camp at pyramid right above the launch ramp. BTW, if you're planning to go to pyramid on a summer's day you definitely want to be there early. We typically camp out in line...