S.B.
Sounds like everyone likes to be close to the water so Point Mugu in Malibu is great and you also get the benefits of the nearby mountains. We tend to enjoy the mountains and regularly camp at Chilao north of LA off Hwy 2. It's only 2 hours drive from the Westside and offers many hiking trails and a visitors center (unfortunately closed currently due to lack of funds but has a nice walk trail behind it that tells the history of an Indidan tribe that lived in the area). An added bonus is that Newcomb's Ranch is only a couple of miles away where you can enjoy great food and if your boys like motorbikes, then on Sunday's there are at least 200 bikes lined up and Newcombs has a great BBQ spread. Saturday's there are also a lot of bikes to check out but Sunday is their big day. If your boys like to climb then a short hike to one of the Vetter stations (look out) is a must do too. We've camped up there twice this year already and this year no bear sighting's - common in previous years but according to the Rangers they've moved the bears further away. Enjoy! We're off to El Capitan in two weeks which someone else also recommended.