prep is key! I painted the inside of my boat. I cleaned it with OH, sanded with a sander with 80 grit paper, wiped again with OH, then sprayed it with acid wash to etch it. i would say to etch it for sure! I get my local Technology center ( the one for high school students) to bend/break, weld, machine anything i have. They love getting outside small jobs. It always cost me a 12 pack of Pepsi and a 12 pack of Dr Pepper. generally same day service.