Hello again, I read the Technical Data Sheet in the link you provided. Penofin is not a varnish and does not form a film at the surface of the wood. It is an oil that soaks into the wood. The TDS suggests reapplying twice a year. A varnish is far more durable. A good marine varnish would last at least two years outdoors 100% of the time before a maintenence coat is required. Our woodies will be in the garage most of the time which is why Bob c49er varnish lasted 30 plus years. I recently came across a varnish made in France called Le Tonkinois. Is it made with Tung and Linseed oil and contains no solvents. Guys on the wood boat discussion forums say it has durability equal to that of other marine varnishes like Epifanes, Pettit, Awlspar,Interlux etc. Anyone out there used it? www.tarsmell.com is the website where it is sold in addition to Hamilton Marine.