Why are you trying to convince phosphide of the need for single payer? If, by now, he hasn't figured out that it is cheaper for him, while providing better results, he never will.
On issues of healthcare, gun control, environment, the electoral system, human rights and essentially any government program intended to redistribute wealth, Conservatives must be ignored. It is a waste of time. It is better to focus on building up the base than it is to dialogue with people who have chosen ignorance as an ideology. Talking amongst yourself to come up with a realistic alternative is a far better use of your time.
The Germans have a good model for American healthcare.