Your right there Tony, We use Permagard on our Jets and Turboprops. Slipperier than Teflon coating and even good quality masking tape won't adhere to it. Pricey though @ $400 per 8oz, and you have to be a certified applicator to apply it. I must say it is the shiniest stuff I've ever seen once done though.
https://www.permagard.com/aviation