In a message dated 8/20/2005 9:38:11 AM Pacific Standard Time, murray@sonic.net writes: I had a cover for my M15 custom made from Sunbrella Just an additional thought... There is a cover for M17 #496 which was professionally made but, could have been designed differently / better. First, the maker used a thread which was not UV resistant and although the material is still in great shape the thread dissintegrated. Perhaps someone can add what thread is UV resistant? Second, if I were to design a cover, I'd like to be able to use it mast up or mast down. That would likely require a split and either snaps, velcro or zipper, but would be lots more handy. In addition, one cover I saw (on a Flicka) had sand bags that kept it in place. The owner kept the cover on in the water, on the trailer, mast up or down. Bill www.msog.funtigo.com