Just wanted to tell everyone of a cheap trick that I have been using in my last two boats. I have been buying king sized eggshell crate mattresses (from Wal-mart, Belk, etc.) and cutting them to fit the V-birth. It adds a lot of comfort to the V-birth. The last one I bought was really nice and had memory foam on it. It makes a huge difference when I set it on top of my cushions. I then take King sized fitted sheets and put it over the foam and the cushions. So for around $60 you can make a big difference in comfort in your sleeping quarters.