I am using a fast drying anti-oxidant etch-primer in aerosol. One rattle can gave me one dust coat and two wet coats. Looks like good complete coverage.
There was just enough primer left in the can to apply a good third wet coat to the rear dropouts and lower seat tube/BB area, especially just ahead of the rear tire.
As I am a bit of a masochist I decided to save that long-gone dealer sticker.
When totally dry and gassed off I will lightly sand and decide whether I need to re apply primer.