I'm part of an outdoor adventure group with mostly folks in their 40s to 50s and a few have shown interest in learning to sail. While I've got sufficient experience on keelboats, Ive never taught sailing, especially not to beginners in this age range. We'll likely be using whatever small boats we can get our hands on like a Sunfish or similar dinghies. I've already given them a headsup that capsizing is part of the learning curve!!