The most common wing stands are made out of wood with a base that is probably 3′ wide by 7′ long (determined by the wing leanth to be supported), with six upright 2X6 posts (3 at each end). Between the posts strips of a strong material (old clean carpet is the most common material) is strung between the 2X6 uprights to form two slings at each end. The two wings are then set into the slings with the leading edge down. I have my Yankee wings sitting in such a stand now. Sorry I don’t have a picture handy.