Customized for each boat, to optimize the opening on a solo boat, so you can portage as well as store and remove gear easily without removing the deck.   Add a and attach the boat securely to the top of you vehicle and you can car-top or trailer your boat with the deck on.  

The opening is customized for each gunwale arch to maximize the width of the opening for your convenience, while hook and loop tabs keep the opened section rolled out of the way.