Stir the sugar, water, and salt together until they combine to make a thick liquid.
Pour the mixture over the coconut flakes and gently stir to coat the flakes.
Spread the flakes out on a baking sheet covered with parchment paper or a silicone mat.
Bake for 5 - 10 minutes. Check on the flakes regularly until they are lightly toasted. They can quickly go from toasted to burnt, so be sure to keep your eye on them.
You can eat them immediately, but they will be more crispy after they cool.
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Notes
Dang coconut chips are made with coconut sugar. If you choose to, you can replace the granulated sugar in this recipe with coconut sugar. I tried this method and found that results tasted so similar to the granulated sugar that it wouldn't be worth spending the extra money on coconut sugar unless you planned to use it for something else as well.