I, too, am a fan of CN; as I was taught "the prudent navigator does not rely on any single means of navigation, but heeds all the navigational data available". Having said that I also believe CN is not the ultimate backup, always available. On a trip from Atlantic City, NJ to Cape May, NJ with a weather forecast of clear weather we were socked in with fog for nearly the entire trip. CN and coastal navigation were not possible with visibility of 20 feet; so without the GPS it would truly have been "brown pants" time. With GPS and radar it was still nerve-racking.