What I've seen indicates that after charging they are required to return the scooters to their "Bird's nest", not to an arbitrary location of their choosing. I

What I've seen indicates that after charging they are required to return the scooters to their "Bird's nest", not to an arbitrary location of their choosing. It might be that they choose to forfeit the reward for the initial charging by not returning the scooters, but that seems like more of a no-brainer to detect; chargers who routinely do not return their scooters to their nests would be extremely easy to detect. Easier might be to check them out as riders, then toss them in the van and "return" them to the charger's backyard or garage; if you have a group of people who are in on this, then it seems like you could make this nearly undetectable by pooling the risk.