We have had radar aboard our cruising boats, sail and power, and anyone who prefers to live without radar is a masochist. They may be sailing around in the fog thinking they are avoiding everyone with their skills at listening, and not giving credit to all the boats our there avoiding them, because these boats have radar. Our closest call in the past years was a target on our screen that kept coming at us, no matter how many degrees off course we turned. We were putting out our loud fog signal, but he kept coming at a fast speed. When he finally emerged, close up and personal, it was a small, fast boat with no radar, obviously pursuing us because he must have thought we were a sound emitting buoy. He did a quick turn and disappeared back into the fog.