We have a member of Sandy Hook Bay Catamaran Club who has added a spinnaker to his H17. He also designed a snuffer which can me used either mid or end pole and did extensive testing with it last season. I believe he is planning to put it into production. His name is Don. I'll email this to him so he can corres[pond directly with you.

I'm planning to use the snuffer for a mid pole system on my P19mx this season.

Sail fast