Flag etiquette
From the attached link:"Boats should fly the National Flag. Most pleasure boats in US waters have a choice of 2. -The yacht ensign, with its fouled anchor over a circle of 13 stars, the "Betsy Ross" flag. Originally restricted to documented vessels only, it is now commonly flown on recreational boats of all types and sizes instead of the National Flag (see picture).-The 50-star flag "Old Glory" you are familiar with.The appropriate time to fly the ensign is from sunrise to sunset, except when racing. However, whenever a boat is taken into international or foreign waters, the 50-star U.S. ensign is the proper flag to fly and the yacht ensign cannot to be displayed. In other words, if you own a US boat in the British Virgin Islands, you should not fly the Ensign, but the National Flag.Boats today fly the ensign from the stern, which provides the best visibility, but it can also be flown from the leech of the most aftersail. When flown from the stern, it should be on a staff (pole) that is sufficiently long and angled, and that is offset to one side (traditionally the starboard side), so the flag flies clear of engine exhaust and rigging."