What are the best boating destinations in the United States? Or more precisely, what are the 40 best boating destinations in the United States? To find out, the people at Dockwa, which is, after all, a high-tech operation, crunched the numbers on their app and web site to compile a list of the most-searched-for destinations. They say this is not a ranking, where the first on the list is Number One, and the fortieth is Dead Last, but simply a listing. To my mind, there aren’t any surprises here. The list starts with Block Island, Rhode Island, and ends with…