The captain of a Doggersbank 97 explorer yacht just wrote about his trip to Robinson Crusoe Island, yes, that Robinson Crusoe Island, the one that the fictional Robinson Crusoe was stranded on in Daniel Defoe’s 1719 book that became a classic. And, it turns out, Robinson Crusoe Island is a terrific place. The island is a bit remote, about 416 miles off the coast of Chile in the South Pacific. That’s why the 18th century mariner Alexander Selkirk was stranded there for four years before he was rescued (the real back story to Defoe’s book). It is the largest in…