If it was me and I had banker money...I'd talk to one of the vehicle wrap guys about wrapping it. But anything you stick on it will scratch much easier than the plastic.
Mine has actually held up great against scratches and I still drive it through the east Texas woods with no worries. If i had the money, i would pay someone to do it again that knows all the details about it. My only issues with mine is a few spots have "bubbled" up and aren't sticking to the plastic, but i just cut them out and replace with a spare sheet over the top of em.
Here are a few of mine not long after i did it. It was faded green before hand