So of course I had to try it.
Measure out eight (8) cups of coconut milk (or whole cow's milk or soy milk or goat milk) and put it in your crockpot on low for 2.5 hours. You're trying to get the milk up to 185 degrees to kill any potential bacteria.
Then turn the crockpot off and let the milk cool down for about 3 hours - down to 105-120 degrees. Then take a cup of warm milk out and whisk in 1 half cup of premade yogurt.
Mix that back in to the crockpot and wrap the crockpot in thick towels or blankets. You need the crockpot contents to stay between 105 and 120 for 4-10 hours to properly "yogue."
If you set this out overnight, when you wake up in the morning - you'll have fresh homemade yogurt!
I am sorry to say my first batch didn't turn out. I am not precisely sure why - I've read several blogs where the first batch didn't turn out but every subsequent batch did. I'm thinking I didn't maintain the temperature, or I used light coconut milk rather than full fat coconut milk, or my yogurt starter wasn't fresh enough or active enough. So for now, Nick is eating plain whole goat milk yogurt and I will keep trying with the homemade stuff!