I have a winter cover that I had made about ten years ago for my 48 Jefferson. It is made from that heavy green canvas duck material with the felt lining. I used it two or three years that I can recall and it has been wrapped on a skid in my warehouse ever since. It is reinforced with D rings about every 4' at the bottom and a polypropylene rope sowed in like a draw string. There is a big zipper sewed in at the swim platform for boarding when on the hard. It is located in Marion IN. $600. I have some pictures of it spread out on the floor and a sketch of how it fits the boat. I have no pictures if it on the boat. Greg Bowers