Addressing some rust starting in my truck bed

[wazzabie]

Take an awl and if you can punch thu the metal then it needs to be cut out and replaced. There could be more rust behind from what you can see.

[rustprimer]

This may sound insane, but I use coca cola to remove heavy rust from metal. Usually, I soak rust overnight and it removes all the rust. Since your bed metal is thin, I would keep an eye on it. You would have to tilt the bed and somehow
figure out how to keep the coke from draining out. This is the reason I don't drink coke. I have used it for years and it's also cheap. Just an idea.

[rustprimer]

If you want to try the coke, take heavy rusted nuts and bolts and put them in a plastic container and soak overnight. The rust should be gone and the metal clean.