The trailer has only surface rust, none of it has broken through and there are not holes.
Now, I've always been told that I need to sandblast the paint off. I've gotten some quotes and it's EXPENSIVE. I can rent the equipment, and I can probably find a place to do it, but I've never used a sandblaster so I'd be concerned about accidentally damaging the trailer.
I was thinking, could I use some sort of sander, like a belt sander or a rotary sander and get the old paint off? I understand that it would probably take a lot more time and I'm sure I'd go through a lot of pads, but I'm trying to stick with my level of ability.