After selling my previous yellow WR17, realizing the error of my ways and buying another, I had to come up with another sleeping arrangement. This time, I was looking for something that didn't have so many parts to be fumbled with and dropped overboard.
I found a pop-up, one man bivvy tent on ebay that looked like it fit the bill on ebay.

These first two pictures are from the ebay ad.
I cut a hole in the floor of the tent to fit around the forward cockpit opening.
I used a bungee cord through part of the existing tubes around the perimiter, and then used some webbing sewn around the hole I made in the floor.
This arrangement let me pop up the tent and snap it around the coaming very quickly. It is self-supporting so there were no other parts to connect. There are some tie-downs on the corners that could be used in extreme wind.
I use a Crazy Creek tarp over the boom with it for rain.