After retiring from the NFL, he and former San Diego Chargers quarterback, John Hadl formed and Austin-based real estate firm. When, in the 1970s, one of his clients asked him to join him the horse-racing business, Hudson became a successful trainer of quarter horses in Texas. He then switched to training thoroughbred horses in the 1980s, racing them at Louisiana Downs and then Oaklawn Park in Arkansas. Then he came back to Texas for the inaugural season of Lone Star Park.