yep.. Ive clear coated bare metal tanks over the years and made some mistakes..
1. if you are going to use the spray on clear coat, dont polish up the metal.. It will just peel off a week later.
2. the spray on clear turns yellow a year or two later.
3. best thing for bare metal, (if you dont want to spring for clear powercoating), is Por-15 PC Glisten. Its a marine grade clear coat for any bare metal. Also, its non-porus and turns rock hard after 1 application..(in other words, good luck trying to take it off if you mess it up...)