Oliver Hawke, a 15-year-old from Nicasio, and his friend Ernie Bates last week received a Marin County Hero Award for rescuing an unconscious man in the waters off Stinson Beach in February. The boys were surfing roughly 100 yards from the shore when they noticed a shape floating towards them; they soon realized it was the body of a man they had seen just five minutes earlier boogie boarding past them. The pair acted immediately:…