I cut some plywood to fit the front and back of the Banshee sailboat with notches to hold the two part mast and boom in a triangular shape, so that they would support a rain/sun cover to allow it to shed water. Even though the wood would be protected under the cover, I gave it a good coat of exterior paint. I also used 100% silicon along the bottom in an effort to keep it from sticking to the boat (which will matter more once I re-paint the boat….which is in the long term planing horizon now that it’s somewhat protected from the elements).
The boat cover that I bought was the shortest available (14-16′) , and it almost fits (it hangs down a little on the back) and so far it appears to be of a good quality given the $50 price point: MSC Heavy Duty 300D Marine Grade Polyester Canvas Trailerable Waterproof Boat Cover, Pacific Blue,Fits V-Hull,Tri-Hull, Runabout Boat Cover,Full Size Boat Cover Purchased From Amazon. I’m using the “A” model — Length:14″²-16″² Beam width: up to 68″³ (Fit V-hull runabout boats with beam width to 68″)
Cover longevity update: 22 months in, the cover has turned from a blue to a gray where exposed to the sun. It has a few small rips where it caught protruding hardware on the masts before I learned to put gaffers tape over them (and cover the end of the masts with spraypaint can lids), but I expect to be able to get 2-3 seasons out of this cover.
Here are some photos of the plywood: