Minor bubbling on rocker

Rust never sleeps!

It is cancer and unless you remove it, it will spread! Covering it will not work, converting it maybe. I do not prescribe to the what seems likes easy fixes, to good to be true!
Agreed, but as I have tried to say here, I'm not trying to have a show car here- been there and done that. The car is VERY SOLID where it counts (yes, the rockers DO count too), but I do know that sealing the problem areas from Oxygen on BOTH sides will greatly slow down the oxidation process, and being completely out of the weather all the time will help too.