After seeing countless videos of car/trucks/lorries with unstable load, my dad has been very annoyed with me whenever I need to help him drive a trailer around

After seeing countless videos of car/trucks/lorries with unstable load, my dad has been very annoyed with me whenever I need to help him drive a trailer around with stuff. He just throw shit onto it, an leave it. I lock that shut down, hard. I'm not gonna be that one person who accidently killed someone one the road, because I had something come loose.