I have an original set of Cape Dory 25D cabin cushions that have some life left. They are original 1984 Blue. They are not torn but they are worn. They are better than nothing and could make good patterns. I think you will probably have to pick them up in Winnsboro, S.C.
I also have cockpit cushion covers which are no longer serviceable but could make a good pattern. Cockpit cushion covers can be shipped at your expense. If you can work out how to ship the cabin cushions, I will help. Call me at Eight zero 3 -the four one 3-sixty five hundred