I agree wholeheartedly with Greg that the whistle (or some other handy noisemaker that can make the guy's ears bleed) is only a first step. It's just a quick way to slow him down and alert others to the fact that there's something going on.
Tell your parents and other adults you trust that you're concerned and ask them to talk with the police. The police can then make a courtesy call on this person to let him know that he's become a person of interest to them, and that if anything ever happens to you, they'll come looking for him first.
Last edited by Larry John : 09-18-2004 at 08:43 PM.