I love them; picked them up off ebay, and I didn't even do the drill method. Simply bought a ton of industrial-grade velcro stripping and velcro'd the heck out of them. Perfect for keeping the dog hair off the seatbacks, perfect for keeping everything else off of them, etc.
There's really nothing you can mess up, and they save a ton of mess!
There's really nothing you can mess up, and they save a ton of mess!