Hearing about that pine tar mix has me intrigued since I've battled salt air on my coastal deck. What specific ratio of linseed oil to pine tar did the boat builder swear by? My experience with straight linseed oil left my Adirondack chairs needing reapplication every season. Does the pine tar alter the wood's color significantly, like darkening cedar to a deep brown? How many coats do you apply before it truly stands up to a nor'easter?