Rust converter question

[barmanvarn]

Right now I'm just tinkering with my old truck when time permits. It may be 10 years or more before I can really dive into a restoration.

In the meantime, I have to other option than to keep the truck outside with a decent cover that I replace as needed.

The body has of course developed rust spots on some body panels, especially the top of the can and the bed has a few spots where holes have developed.

What is my best option to try to stop the spread of rust for now? Can I just get a spray can of rust converter and spray it wherever there is rust?

Apologize if this is a dumb idea. Am open to suggestions.

Thanks!