I have been on the hunt for a new top for the Parti Barge for some time. I'm not sure of the proper length to buy. The length from the front rail to the back of the rear seat is 16' with an additional 2"7 for the sun deck. Definitely will be Sunbrella and ideally 1.25" frame. Boat is 8.5"wide. Any suggestions as to where to buy. Not a lot of help with iboats website.