I agree many years ago, I knew a guy who filliex the hole with JB Weld or something. Worked like a charm. It ran for quite some time, he said now my alt bearings making noise but still charges. Month or so later the bearings in the water pump went and fan hit radiator. New pump. And New Rad. Old hoses reused and overheated on trip and not the kind of guy that says to hot to drive shut down. Now water in oil.