Well lat long is the standard for marine operations and a mayday call uses it. In order to get a marine radio licence you have to demonstrate that you can correctly transmit a mayday. It works OK in noisy conditions because we say it in a standard format that everyone is expecting. E.g “My position is North five four decimal six three one East zero zero six decimal five two niner” this should probably be taught in school, my kids were taught basic CPR in primary school here so I don’t see why this couldn’t be taught this too.