Heat coconut oil in large heavy pot over medium (no higher) until melted. Drop a couple of kernels to check temperature of oil. When they pop, add the remaining kernels. Swirl kernels to coat in oil, toss in sugar and salt covering evenly. Top with lid, but leave slightly cracked to allow steam to escape. Continue shaking/swirling pot as kernels pop. Basically you never stop moving the pot. Immediately remove from heat when there are 2-3 seconds between pops.