Sometimes I see slow lap swimmers turn around quite a distance before they reach the end of the pool so that they can always continue without stop ahead of whoever has been waiting at the end to start. So the picture is like this: as they approach the end, see someone is about to start, right away they make a U-turn and swim back. Since they are slow (a faster swimmer should hardly cause any inconvenience), the person waiting would eventually catch up and have to pass him/her. So their turning around in the middle really does nothing but causing inconvenience for both others and themselves, and unnecessary potential for accidents. What do you think and what would you do in such cases?
