Many of the boats at our Club don’t bother with covers on their spinnaker chutes. At an inland club, we really don’t have the waves to merit it. We hope to soon be able to post a new video though where you can see a Fifteen in a seaway under spinnaker where the nose dives under water for quite a few seconds. Dragons have the same challenge… That’s when the chute cover comes in handy – so long as you remember to close it of course !!
Here is one on a P&B boat. Very tidy and it works. The control line emerges at the forward face of the cockpit for the crew to operate. You only have to yank about 18 inches of line of course, so there’s not much string to get in the way.
The Flying Fifteen Blog 
My boat filled up last summer as waves continually broke over the foredeck with no chute cover.
How does yours fit? and how does it open and close? The opening on my foredeck goes to within 2″ of the very front of the boat.
Tim Giles – ff3132