First, it's important to refrigerate the coconut balls to firm them up, so they don't fall apart. Then, melt the chocolate or chocolate chips in a microwave or over a double bath, stirring frequently. Put a coconut ball in melted chocolate, and using a fork, roll the ball around, so it gets covers with chocolate on all sides. Then lift it up with a fork and slightly shake to remove the excess chocolate. Transfer to a parchment paper and repeat the same steps with the rest of the coconut balls.