On my bicycle trip to the San Jaun Islands I found some fun boulderinng at the beach at American Camp. The boulders are located along the south shore. Not worhth going there just for the bouldering, but if youu are going there bring your shoes. Leave the crash pad at home, you just fall off into the sand. Check the tide tables, don't go during high tide. Great place to bring the family or others who don't climb. I recomend leaveing the car at the Anacortis ferry termanal, American Camp is a short ride from Friday Harbor. The drinking water is brackish, so bring enough good stuff for the whole day..