Catalina 42 Boom Tent Winter Cover. The Catalina 42 Boom tent Winter Cover is fabricated with a 11.5 Ounce Polyester Fabric called Top Gun. Fully Finished Skirt allowing superior protection. This cover is delivered with six vents, entryway door, boots at the stachions and pulpits as well as a Velcro mast collar. Call for details on the Catalina 42 boom tent style winter cover.