Sorry to hear you sold your H-17. The plugs are to protect the sockets from getting water in during winter storage, another cause of failure. In our fleet of H-17's in the North West, I have only seen one socket failure, other than minor leaks. Not bad for over 60 boats. As for the Pryde Sails, we had three out of nine H-17's in the NW Championship last weekend flying the orginal Pryde sail, including the winner. Pretty good for a sixteen year old sail.
Caleb Tarleton