The Dwight size is good for up to 200 lbs. The Jacky size is good up to 175 lbs.
Posted here in case any back yard builders want to try one, or anyone wants to take one to their local shaper to start a dialog. There are already 2 readers of this blog, in other parts of the world, getting them made.
You can read about Steve's adventure in getting one made in the UK here.
I have no finanical interest in this. I only make them for the wife and I. The Greenroom has offered to duplicate them for the local guys.