When I spoke with Kelly, I asked her about installing the covers. She said they do it for $10 plus the shipping costs. If you are close to them, it would be well worth it. The seats may be a little costly to ship due to the size, not weight. I found a small local upholstery shop that will do it for $15. I'm going that direction. They make a hump seat similar to the Tech Quad so I would think they could give you a little more cush. A call to Kelly will get you set up, she is really great to work with.
G