In my experience with repairs to my vehicles, dealerships and repair shops charge 2x-3x the retial price for parts that I can buy at NAPA's retail price. My AC compressor $995 from the dealership, $485 fromn NAPA. I don't buy lifetime warranty parts. They are exactly the same as the 90-day warranty parts, just painted a different color. You're paying about 50% higher price that their lifetime part and they're betting you won't need to replace it. I've never would have been able to collect on a warranty replacement on anything I've ever purchased.
It's a common problem with towing, at higher speeds. You take preventive steps, or you take your chances.
Personally, I'd probably make a padded plywood overlay.
I'm only familiar with Pledge as being a furniture wax, not a cleaner. Yes, you can use it to clean the fine dust you'd find on furniture but not on plastic.. I would suggest you clean the window with soap and water, dry it with a soft cloth and if you wish apply pledge as a water repellant. It won't repel mud, dust, dirt and bugs (might keep them from sticking too well). Plastic scratches very easily, seems like it will scratch on its own.
Happy Thanksgiving UTV Board friends. I hope you are able to spend time with your Family and Friends this Holiday. Gobble Gobble! Sent from my LML212VL using Tapatalk