The line drops to the deck and is run back to the cockpit.. If you pull on the line, it take the bag out of the sail and the sides flop in the wind.. If you drop the halyard and reliese the sheets, you could pull the kite right back down the side of the boat... On my smaller boat I had a bag at the companian way that I would shove the kite into..
On my First-42, i have a sleave, or sock that pulls down over the kit.
The main reason for the belly button ring, is for emergencies to deflate the sail....