I haven't used any pork trailers in like 20 years I bet. I just remember being a kid and using them and never taking them off. You would think 8 year old me might learn and take them off after the first time or two. Nope that never happened. I did catch fish using them though.

My bank boxes are filled with pre rigged/cut off plastics. The Gamakatsu will take a long time to rust. The eagle claw and no name hooks have rusted but they still hook fish.

I try to always take the plastics off.  I haven't found a hook yet that wont rust eventually.  Any plated hook will take longer then a non plated hook.  Like others said some hooks take a lot longer then others and it is very dependent on baits.  For example a senko.  It will eat any hook out there that I've found.

Sometimes it'll rust them; other times it won't. It's usually pretty obvious which baits are super salty and which aren't.

 

I've caught plenty of fish on mildly-to-moderately rusted hooks with sharpened hook-points. The fish don't seem to mind. I leave a lot of hooks inside plastic baits.

That may very well be true .  You might be using better quality hooks and jigs than I . But I know for a fact that I have left salty baits on hooks and they rusted .

I've left Gammy and Owners rigged in baits in the bag and they rusted. Maybe I'd fished them and the combination of moisture and salt rusted them, but it happened, even with premium hooks.