Finally, some photos of the "damage". I have to say that it's not nearly as bad as I'd suspected.

Wire brush, lots of Salt Away, and a little bit of paint or undercoating ought to clean it right up.

Do you guys see anything in the pictures that shows more than I'm seeing?

 

Don't forget the inside of the boxed frame, it will look like what is coming out of that hole. You know you wanted that snake camera from the store anyway.... you can spray stuff in there with a garden sprayer. Plenty of vehicles on Dauphin Island and from Foley look worse....

 

Thanks for the comfort level; I agree that launching boats on shallow angle boat ramps will get cancer into trucks fast.

I'm planning on covering the lowest holes on the frames with tape and then letting the Salt Away solution sit in there long enough to penetrate through the rust; hopefully neutralizing that salt. Truck will look great by this time next month.