It's a good thought, but it was a bit late in the game. For me, it doesn't matter, as I am carrying a hand held bottle. Having the cups of water at the aid staions to throw on my head is nice, but I acheive the same effect by putting ice in my running hat, and letting it melt.
Either way, thanks for volunteering, I will be running the course tomorrow, without volunteers, we could not do this!