I too see this all the time. However it would be pretty unusual for three adjacent boats to simultaneously suffer catastrophic damage to underwater metal parts and have the cause be problems aboard each individual boat. Common sense says that one boat had the problem and shared it with the neighbors.The problem I see is that most boaters are quick to blame the boat next to them I hear this all the time. The problem with this other than building bad feelings is that owners often do not look for problems on their own boats and just point fingers...