...I prefer a camplight hung from the forestay, .../QUOTE]
Someone will know the name of the cove in Marathon, FL (IIRC). We pulled in then saw all the solar lamps from Home Depot hanging in the breeze. They made sense for THAT anchorage. However, some months later we saw in the Boat U.S. magazine the Coasties had raided the cove, handing out citations because the lights did not meet the requirement they could be seen from 2 miles away. Probably they could not, but the cove was maybe a 1/4 mile across. If two miles away, an observer would be out in the ocean, on the other side of the peninsula that formed the cove. All practicality aside, the lights did NOT meet the requiremnets. I would think most of the boats DID have their mast anchor light as backup.