Here Geoff, just incase you are thinking about it and need a little convincing, here are a few pics of Thornhill. Disclaimer: I suck as a photographer and my camera was a cereal box prize.
Here is a picture of what all of the sites look like. Each with their own table and fire pit. Dumpsters and port-a-pottie huts (for those who need them) staged every 20 spots or so.
Here is a view of how wide your spot actually is. My old truck was a quad cab long bed and my overall trailer length is about 23'. You have that wide of a spot for at least 100 yards to the water. The hills just behind the PCH is in the background.
View from closer to the water looking Southeast. It is a rocky beach, but the rocks stop at the waterline so swimming and bodysurfing is still cool. When the tide comes up at night, the sound of the rocks being pulled back is really cool.
View looking Northwest torwards Pt. Mugu NAS
Sunset. Nuf said.