I can remember taking surf camp lessons in Sayulita when I was a single, child-free chica. This program sounds like so much fun, albeit completely impractical for my summer camp needs:
Sea, Surf & Fun 5 day surf camps are designed for kids ages 6-19 years old. Each day, expert instructors teach a surf lesson specialized for kids. The surfing spot is the Jetty in Half Moon Bay (30 min drive from SF) which is safe, uncrowded, and perfect for beginners.
Find out more about combining a summer getaway with your child's sports camp at seasurffun.com.