I am looking for information on an old boat designed by Hinterholler. A Cygnus 20' Sloop. It is a smaller version of the Shark. Nothing appears on the web. Would like a copy of the promotional phamphlet if possible and any other information out there. I believe they were built in Ontario in the late '70s. It is a sweet day sailor that can move in a zepher and is stable in a good wind. Has a generous cockpit. Two types of keels. Fixed and centerboard. Most interested in the centerboard type because easier to guide onto a trailer from the water. What does the centerboard keel weigh? What is the type of fiberglass construction? What does the boat weigh?