How about a furler that can also drop a sail like hank onís. This Kiwi group Reef Rite Head Sail Furler Details - Page 2
has a foil that take slugs; it allows for the sail to be furled or dropped like hank ons. It has slugs that slot into the foil grove. If it works then it would give the best of both worlds - read the paragarph under "Sail Handling"