Modifying a seat in Pilgrim X

I am looking to modify my Pilgrim Expedition seat so i can get better rotation for a few more Greenland rolling skills and will have to come up with something other than what NDK offers for the Pilgrim. anyone else changed out the seat in their Pilgrim? if so what did you do. Also the seat i have is a nice Fiberglass NDK seat. what is it’s value. i will most likely sell if it all works out.

ndk options
NDK offers a nice foam seat it you cut out the fiberglass seat and the hangers it will glue right in.

Instead we used a hot seat to lower the center of gravity and used hip pads from another boat project.

I too am interested in this idea of the old fiberglass seat having value. I’d happily trade mine or sell it.