Anyone who has a QCC kayak knows they are a great kayak, but the seat is lacking. After 6 years of suffering with mine, I decided to remove the seat, and make something better.
The new seat is made from regular pink Styrofoam insulation, carved into the shape of a seat.
It was overlaid with four layers of fiberglass impregnated with epoxy resin. The result was a fairly light but solid seat. I shaped the bottom of the seat to the same contour as the inside of the kayak hull by getting it close with a saw, and then placing the seat in the boat and rubbing it back and forth on the rough fiberglass until it fit. It is held in place by a 6x12 Velcro pad on the bottom. It was then painted with gloss black tractor paint.
The new seat gives much needed thigh and back support, and looks reasonable nice. I'm pretty happy with it.