I don't like how the dinette table sticks out really far when you put the small dinette in my TT into bed/couch mode. I had some extra plywood and decided to cut a piece out that better fits the space.
Are you using this piece of wood only in "bed" mode? If you are using that piece of wood in "table" mode then I would round off the corners on the isle side or you might find an injury to your hip trying to get between it and your seat area.