I saw a mobile welder on a similar program that turned up without a welder. just convinced all his customers that the job didn't nee welding, he had a new compound that was mot friendly and was better than welding.
turned out to be body filler, he was just smearing it over, sanding it back and spraying it
What makes me laugh about that is that if someone was half decent at welding they could slap a mot patch on faster and cheaper.