My husband has been pretty good at finding videos on YouTube to do simple fixes on our cars. But my concern is that there won't be YouTube videos for the maintenance these would need. He's not mechanically minded enough and doesn't know trailers to just figure out how to do something that may be complicated himself.
Our 18 year old son is a welder. He graduates with an AS in welding and 3 welding certificates in the spring. So that may be of some help. He's more likely to try to fix something even if he doesn't really know how. Sometimes that works, sometimes not. Lol.