Kind of surprised that nobody has mentioned this book yet, maybe because it's not 100% about surfing, but more about the counter culture of the 60's.
"The Pump House Gang", by Tom Wolfe.
The name comes from the sewer pump house that still stands at Windansea beach in La Jolla, and the local surfers that hung out there.
A very fun read, it came out at about the same time as his other hit book "The Electric Kool-Aid Acid Test", another great read.
This first pic is of "Murf the surf" all over a surf chick, who had a statue of himself by the shack on the beach, which was later destroyed allegedly by some bikers.
The second is the pump house itself, with an homage to Wolfe on it, the building is still there, but w/o the homage.
The pump house gang evolved into the Mac Meda Destruction Co., there are still some members of them around, I know a few of them, and they still have reunions every now and then. But not like the days gone by when they'd throw big parties at Windansea, which would bring out San Diego's finest in blue (the po-pos), to try to regain order.
A scene in "Riding Giants" where you see guys riding thru the storm drain on a flexy onto the beach, is during a Mac Meda Destruction Co. party.