I wanted to powdercoat my nerfs and grab bar. I'll still probably have the nerf bars done, but for almost $50 I figured I could just paint the grab myself. What do you guys think about sanding it down and painting it with some Duplicolor Truck Bed Coating? Seems durable seeing its used on beds and its main purpose is to prevent scratches and its waterproof. Any ideas or tips? How many coats should I be using? Should I cover up the bolt holes when I paint or just sand the inside of them after i'm done?