I believe the previous boat used for the record had a small pup tent at the mast base. There is one video on their website that shows a portion of it. It is blue and on the starboard side of the tramp. It looked only large enough to either have only your upper half of your body into it, or possibly be able to curl up into a ball inside of it.
Ocean Cat website

Here's the video on the present boat's website that shows a cover over one of the bench seats.

Video
Click the play arrow and give the guy a minute to dig the fiberglass out of his eyeball socket. <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />

GARY