Been a while since I've hung around here, so, yes, this is a delayed reply to this thread. We use Doodle a lot lately for finding rehearsal times for our one-off shows...things that require just one or two rehearsals of people with other commitments besides our company. It does give a great quick visual reference that you can keep checking when new people sign up. And you get an email notification each time someone new replies or changes their answers. You can also edit the options and resend without starting completely over.
Erin