A few years ago, at the end of a charter vacation in the San Juan Islands, my youngest daughter, Liz, and I put in to Rosario Resort Marina. It’s on a small protected bay off East Sound, which almost cuts the fairly large Orcas Island in half. We were on a Grand Banks 36 from NW Explorations in Bellingham, Washington, and had already been cruising up in South Pender Island and then Roche Harbor. Rosario was going to be an easy, last night stop on our way back to Bellingham. It was all that and more. East Sound is long,…