[zonerboy]

If a person wishes to go to a neighborhood pool, walk back and forth from side to side, and call it exercise; then they are certainly welcome to do so. Such persons, however, are not welcome to expect other pool users to stay out of their way. If a person lazing about on their noodle happens to drift into your "lane", that's too bad. Walk around them. You have no right to claim that any particular area of a neighborhood pool is designated for your exclusive use.

PS: same philosophy applies to conversation circles and those attempting to be lap swimmers.