Thom, et al,
No, the headsail does not furl. It is launched and doused from a bag on the tramp. It is made of normal spinnaker cloth. I don't think it fits the definition of a "hooter", if there is a definition. I call it an assymetrical spinnaker designed to sail at a relatively close apparent wind angle. It is pretty simple, the faster the boat goes, the closer the apparent wind angle, the flatter the sail needs to be. Feel free to choose whatever name for the headsail you prefer.
Eric