Embodiments of the invention are directed to a soft shelter extension for use with a hard shelter where the hard shelter has a perimeter opening defined by a side wall and sealable by a deck rotationally coupled thereto, wherein the deck is prevented from over rotating by a pair of opposing cables linking the side wall to the deck. Such embodiments include a bow assembly having a plurality of bows wherein first ends are linkable to each other and second ends are linkable to each other, either directly or indirectly. These embodiments further include a pair of cable slide interfaces linked to respective first and second ends of the plurality of bows to receive the respective pair of cables. A flexible panel covers the bow assembly, and mates to the side wall and to the deck to form an enclosed space when the deck is rotated to a position wherein the cables are in tension.