I wouldn't try to lower the sail on my H-16 when capsized. There is a "trick" that may help get the boat back up. Let the mast point about 45 deg. off the wind, run the jib traveler on the down side all the way out, and pull on the jib sheet ahead of the jamb cleat as you try to right the boat. Wind will get trapped in the jib and help lift the mast. I only had to do this once but it worked. This tip came from an old Hobie Hotline.

Howard