My boat's upholstery is in pretty good condition, but it has a few small holes in high-wear areas. They are small and haven't spread & the rest of the upholstery is still soft and strong. What can I use to patch the holes? I'm think of something like the patches you had on your jeans as a kid. I don't care that you can see a patch on the upholstery, I just want it to last. Thanks.