The Watcher, who lives in the Antioch area and declined to provide his name for obvious reasons, discovered the lot’s money-making powers last year while working as a driver in the area. When he lost his job, he had an idea: Hang out at the lot entrance and charge people $20 to park. He knew it wasn’t legal, but neither was it legal for club-goers to park or drink there. So one July evening, he gave it a shot. Promising to keep a watchful eye on the cars, he quickly found he could make up to $700 on a busy Friday or Saturday night. But most weekend nights, he nets around $250, he said.