[nestorpr]

Here are some samples from a Bertram 25, one is an open box that just hinges open, the other is a completely enclosed unit that uses 2 hinges, one on the main panel and one on the front panel that covers the portapotti from view. That way when you open the "lid" the fron panel hinges closed against the upright lid giving you complete access to the Portapotti. I've used it and is very comfortable and easy to use:






These are from a Bertram 20, same concept, smaller cabin: