Foam Replacement for boat seat

I have a center console that uses one of the ice chest seats for the operator of the boat. The foam doesn't give much cushion for my bony rear end, especially when it is rough. I am thinking of replacing the foam with memory foam if I can find it.
Advice anyone?

www.foambymail.com

Look at C-Cushions in Rockport. They make very nice closed cell foam cushions, not cheap but very good and you'll never replace cushions again. I had them on a sailboat years ago and they were really nice.