You can try to contact Rick Bills. (http://new-england-catamarans.com/hot.html ) he had few of spinnakers for sale.

Another good source to get some ideas for your snuffing system is http://www.funcat-sailing.de/Tornado/sitespisysteme.htm

If you debating whether go with end pole or mid pole snuffing system go with mid pole. Not so harsh on the spinnaker.

As of now I’m trying to make my own snuffing ring out of fiber glass – tired of launching from the tramp. I still do not know which style to choose. Any input would be appreciated (dimensions).

Spinnaker might be little expensive but it is worth every penny.

Hope it helps.

Kris