In a few weeks, I will be taking the NRA basic pistol instructor course. I have tons of experience shooting both semi auto pistols and double action revolvers over the past 35 years, but my single action pistol handling skills are pretty weak. I can do the basic load/unload sequence in a single action revolver. Do I need to purchase a single action revolver in the near future if I'm going to be teaching it's safe use to students ? If you think I need to buy a cowboy action gun for demo purposes, what would you suggest for entry level ?