I have a used DucksBack cover for sale. Was fitted to my 6.5m rib and (the cover) was used when i bought it in 2019.
Reasonable condition. No holes or tears. Some dirt marks.
2 of the strap plastic clips were broken, so i tied the strap through as shown in pic. You could probably replace the plastic buckles but i never bothered.
May fit other sizes of rib, have included a pic of it on my boat, so you can see it might fit something bigger given the surplus cover over the front of my boat - buyer to determine as will vary depending on console height etc.
Will do someone a good turn, so make an sensible offer otherwise i’ll put it on eBay
