Doug,
You are a "Mensch" for sure!!! Encourage the youngsters with the work ethic to get into the trades!!!
BTW, as for repairing (plugging) nice, small, round punctures in tubeless tires, I once was a small time racing tire dealer/ mounter/ schlepper/ balancer, and I had a small line of snow plow trucks on the side. Let's say I got good at "fixing" tires. Go to a good auto parts place there and get one of the "tire repair kits" that have the "rubberized" rope/twine stuff with the goofy "crochet needle" looking tool. In addition to that, look around the garage for a sharp knife, needle nose pliers, and a funky small tapered round file. Grind the file to a sharp point. This method is really quick and effective. You can do it "on the truck". Pull the nail, Clean up the hole with the file if you need to, jam the "rubber/rope" plug in like the directions say, wind (twist), trim, done. If you work FAST and if the hole isn't too big, you won't loose very much air either. I've used this method on everything from mowers to 140 MPH $500 ea. Formula Atlantic tires. It works.