This sort of presumes that the cops would care even if they knew exactly where all the stolen bikes were. My experience in San Francisco is they couldn't possibly care less. There was for decades an open-air bicycle chop shop under the highway overpass at what is now the corner of Market and Octavia, which was directly across an alley from a coffee shop and diner popular with SFPD patrols, and no cop ever cared about the bicycles.