We sailed around the south side of St John on our 2012 trip...anchored in the very southwest corner of Coral Bay (not down to Sanders Bay) It was a little rolly - I didn't want to anchor among the many 'permanent' boats up in the Bay proper as some are on "moorings" and will swing differently than an anchored boat - and honestly there were some with questionable ground tackle. We did enjoy our return to Coral Bay after several years visiting only the north side of St John