I have a little bit of rust at the bottom of the rocker panels and want to address it before it becomes an issue. I already tried it once, but the rust came back. I have a new idea I'd like to try, but want to get some opinions from others with experience on rust and body work first.

The rust is at the very bottom of the panels, I previously stripped off most of it, and some of the paint around but since the metal is thin in this area I was afraid of ending up with holes if I stripped too much. I stripped as much as I felt comfortable, then I hit it with loctite rust neutralizer, then primed and painted. It took about 2 months for the rust to show up again through the paint, so it didn't work.

I'm thinking about doing something different this time: Stripping the paint down to the metal on a 1" strip down the whole length of the panel, making a clean cut. Then leave it uncovered so that it rusts a little bit and and when it does, hit it with rustoleum rust converter so that it creates that black surface that becomes rust proof. Then cover that with rustoleum undercoating, or maybe spray on bedliner.
The rocker panel would end up with a black 1" strip at the bottom (mine are silver), which I think will look fine, and the new surface would be more chip and rust resistant. That's the theory anyway, can you tell me if this could work or if it's a stupid idea?

Thanks

Some of the rust spots after they came back (the last one is what it looks like after stripping most of the rust off):

IMG_9617.jpgIMG_9619.jpgIMG_9618.jpg