The trick to having the best tasting watermelon is . . . salt it. certain,it may sound weird to salt a sweet fruit, but you've probably had a watermelon margarita with a salted rim or a savory salad like watermelon caprese. The salt enhances the flavor of the fruit, or adds a nice contrast to the sweetness,and draws the liquid out, making the fruit even juicier. As an added bonus, and the added salt helps quench your thirst on blistering days. My friend recently told me it's her favorite thing to snack on during summertime barbecues and post-workouts alike. Use normal kosher or table salt,or experiment with flavored salts (like smoked salt). whether you want to derive fancy, try flake salt for added crunch.
Source: popsugar.com