In striving to be the very best, this would include some psychology on your part. People tend to give what they see or are asked for. If your show is a walkby, let them see notes. If it's a circle show, ask them for notes. A panhandler came up to me once and asked me for a quarter. He then produced a pocket-full of quarters to show off his skills. I mentioned, "Don't you wish you asked them for notes?"