Merv, I'm going to look into clear adhesive materials. Duco Scratch (terrible name!) make clear car bras to fit factory cars and they also supply DIY kits so it shouldn't be hard to make up spats.
http://www.ducoscratch.com.au/clear_car_bra.asp
They also have a spray on product called "liquid glass":
http://www.ducoscratch.com.au/paint_protection.asp
Photo of the clear car bra:
