I had the gust guard clamps or whatever you want to call them from Covercraft, they were crap. They all snapped-broke in very short time. I found better at wally world in their RV section for 1/2 the price, and twice as durable.
A least get a Security Cable, and throw a Padlock on it. If, at 79, you can get down on your hands and knees and attach one, then OK. And no, I'm not saying that to be rude, but if you want to wake up the next morning, and see a cover still on your ride, best to have such. Don't learn the hard way. "The eyes of Texas are upon you!" LOL
"Light Covers", and "Inexpensive Covers" are two terms that commonly don't go with an outdoor quality Covercraft Cover. To get such, and that will last a couple-few years, you're going to drop 5 or 6 big ones.
Ask me how I know?
Oh, and I had the NOAH, I was not that impressed with it. It's like a paper towel material, not woven.