What sort of damage are we talking about? What sort of skills, time, and equipment do you have? How concerned are you that a repair look perfect vs. simply being safe and solid but possibly not entirely aesthetic?
Depending on what you need done, repairs can range from super easy for anyone with a couple thumbs to do, to requiring a lot of work and/or being difficult for the shade tree mechanic to do neatly, and maybe even beyond to where it's not practical to repair at all but rather part out and start over. The last option would usually be pretty obvious: you're staring at a pile of ash and soot, say, or the components that once made up a trailer scattered over the highway median.