Go away other O'day
I let them know they are at risk of a major lawsuit and ask the name of their insurer,get the registration numbers of the boat and inform the local harbor master and coast gaurd.I advise them that I have always wanted the same boat that they own and that I considered this a perfect opportunity to get one.Hopefully by this time they get the hint.If not, I suggest that they contact the harbor master about alternate anchorages or moorings.I suggest they get a tide table so they can anticipate what will happen to thier boat and advise them to maintain watch 24/7.I put out bumpers and let them know that there have been several boats that have dragged anchors in the previous days and that they have ended up high and dry on the rocks over by the entrance to the harbor.I ask them if they have listened to the weather radio about the wind patterns over night.I ask them if they have another anchor they could setif need be.If they insist on staying I get ready for a long night and ask them to leave there radio on and decide exactly what to do after the sun goes down should something happen,and include them (if we are still on speaking terms)in the discussion.I consider moving if all else fails.I have found that most boaters sail and power are usually very concerned and will listen to resonable suggestions if they can be made to see the danger.what else can the prudent mariner do?