My 22 has an Angola Canvas cover. I do not use auxilliary supports and I live in SW Mi. My cover has the motor cover as part of the main cover. This holds the cover more or less taut over the cockpit. When I ordered it I specified the points I wanted reinforced and had the sides of the cover extended by about 3 feet so that the cover also covers the hull sides (down to the trailer fenders). Angola Canvas was very accomodating with the modifications I asked for.
I added grommets and tie down lines about every 3 feet around the bottom edge of the cover for securing it to the trailer. This cover is not meant for use when the boat is towed.
I added grommets and tie down lines about every 3 feet around the bottom edge of the cover for securing it to the trailer. This cover is not meant for use when the boat is towed.