Yes, we need 'em for our O'day 28. No, we don't have $700 for new ones. But we do have a sewing machine.1. What kind of cushion material do you like best for your backside whilst crewing/riding?2. Where can you find same material at a less than arm-and-a-leg price?3. What would be an appropriate covering material (i.e. Sunbrella, vinyl, etc.)? 4. How does a DIY (do-it-yourselfer) attach these to the cockpit seating areas so they don't slide off when heeling?Any other thoughts or advise would be greatly appreciated. Don Casey's book on canvas repair is on my birthday wishlist. Thanks. Flyhop