I used a short 5" piece of webbing and put a hole in each end. Then I bolted the 2 ends under the bracket for the support bar...one end of the webbing under each bolt...it kind of forms a 'V' shape. The male half of the buckle is on this piece. Then take a second piece of webbing...about 14" and attach it to the seat back the same as the old webbing was attached. The female half of the buckle goes on here and the strap can be pulled tight to hold the seat up. Ought to work fine until George gets back in business and genuine replacements can be had at a sane price.