This sounds like great advice! Will likely be very useful for those intending to do something like this.

For once I don't have any questions or comments, but wanted to say thanks for some renewed optimism.
A pro-life group trying to gain traction in Kolkata (Calcutta), India has borrowed the idea of the YES-NO polling:
http://ViswakamalWelfareSociety.org/kolkatans-responding-positively-to-the-pro-life-message/