We have some sheets made (by an amateur) to fit over each of the 4 forepeak cushions/infills individually with elastic. These are very successful, with none of the rucking/creasing that would occur with unfitted sheets. Over the top we have a queen sized duvet, which obviously is far too wide at the narrow feet end, but perfect at the wider end. After years of sleeping bags in the previous boat, it's complete luxury to us.