Well, I did a little more sweating over the seat today. I thought I would try and see if I could not use the factory pan for a seat, but remove the exercise mats I had cut up and glued to the pan and see if they would work mounted straight to the frame (not mounted exactly, just sitting on it). I added a little material at the back of the seat to better cover the frame area, as I am not going to be cutting the bike.
I took my foam seat form and covered it with a 1/4" or so layer of stiff foam material that I paid $5 for.
I then covered it in black vinyl that I paid about $10 for. I am not an expert at upholstery work, so the tucks at the back could have been better.
The seat tucks under the tank on the front, and fits well in the back on top of the factory brace. It probably weighs about 1 or 2 pounds. I added a metal brace (actually a left over hurricane strap from when I built my house) to the bottom of the seat foam to help it keep the curvature to look halfway decent. For 20 bucks or so, I am pretty happy with the looks. Just my personal opinion.