Originally Posted by
Ghefty
I keep a plastic police whistle hanging from my helmet chin strap. Easy to grab and in congested areas I will hold it between my teeth and give a short blast when necessary to get someone's attention.
That's my tactic as well, I hadn't thought of hanging it from the chin strap. You might want to try the Storm Whistle, that sucker is LOUD and gets people's attention damned quick.