Since I typically get into the city early so I can leave early, there was only one time I was still around after rush hour and it was a complete desert - nothing around for essentially miles. It was a treasure trove of high point earning stations, without any spare bikes or neutral stations be able to use to earn those points. And while I didn't have the luxury of time to attempt to trek through the emptiness, I doubt even someone with time would have been willing to try to find something to earn those points. It very likely could have taken close to an hour to move one bike and earn 12 points (assuming the 3x booster is active).