Homemade Coconut Milk Yogurt

I recently tried my hand at homemade yogurt. I've been very into DIY lately and I chose to follow the recipe found in Wild Fermenation (making yogurt using an insulated cooler instead of a yogurt maker), substituting canned full-fat coconut milk for the cow's milk. I also read with interest the process for making coconut milk yogurt here at The GFCF Lady.

Making my own yogurt turned out to be