Steve,
Lars Guck and Guck, Inc make the guck snuffer.
http://www.guckinc.com/skunk.htmI have a homemade guck style snuffer hoop, ( believe I told you I was working on it). I have it on my boat, and it works great. If you are interested I can send you a few pics and give a more full description.
Are you going to be out sailing soon? I want to give you a go with spinnakers this time.
David Rogers