Hey Tom, guess what? You do have room in your kayak.
Just this last weekend I made a smaller version. It measures 9"x12"x8" assembles and 9"x12"x2" folded. I wanted a smaller one that could be carried in a pack for light or solo trips.
I tried it out on my Sunday ski outing. It was -20C and I had a space blanket set up as a lean-to. With the stove in front the heat was more than enough to sit around without getting cold. It's amazing how good hot food is "out there".
Here's a pic of the smaller version...

They're very easy to make and can use almost all recycled materials. Search Dave Hadfield for more info (environmental fireplace) or give me a shout.
The sail is an idea from Bill Layman. It's a ground sheet for our tent, a table/ground cover for a clean working area, tarp, and a sail. It has paddle pockets sewn on the sides to accept paddles or poles.
Here's a setup that you may like.
http://www.songofthepaddle.co.uk/forum/showthread.php?t=14095So, how come your TR's have dwindled off? If you want, I can take your drysuit for the winter to keep any dust off of it!
Five of us were crazy enough to enjoy an evening paddle during the full moon that just past. Pretty wild being able to see the bottom of the lake just from the moonlight. There were shooting stars everywhere as well.
We're down to two big lakes left that aren't frozen. Currently -28C, so they won't stay open too much longer.