I had two small holes in my seat that looked like it came from shrinking or maybe sun damage, so I went to tandy to get some leather. They had leather just for motorcycle seats, and it was $280 for enough leather to do about 6000 seats, which I clearly did not need.
I looked in the scraps which were way too small and they also had a $50 table, where all on that table were $50. I got a piece of white 3mm soft cow hide leather that was about 15 square feet. Still way too much, but only $50.
I also bought the $28 pneumatic stapler from Harbor Freight, which turned out to be very important.
I used the same padding and it was easier to do that I thought. In a few instances, I removed the staples and then re-pulled the leather in a few places. I also moistened the leather with a steam cleaner before stretching it. After the leather dried, it formed to the two cupped places at the rear of the rider seat and the front of the passenger seat. I was very happy how it turned out. Here is a picture.