Let me put it like this. We sold our Goldwing to buy the Rocket. (Standard back seat like Roadster.) I told my wife she was going from a Barcalounger to a Bar Stool. The standard/Roadster back seat is a joke. I spent $600 redoing it twice to make it "Ok" but not great.
First attempt. Had the seat pan widen 5 inches and lengthened about 3 inches then re-foamed and covered. Better but not good enough.
Second and current seat redone by Rick Mayer. Orthopedic foam and a leather cover. Had him do both seats. MUCH better and more rideable,
but still not a Goldwing back seat.
BTW: This is my 500th post. Do I get a prize ?