 But they say look for the field spot, this yellow spot. If it's ripe, it'll be a pale, buttery yellow. If the spot is light green or white instead, then it's not ripened yet. Of course, you may want to buy a watermelon days before you use it. There's that option, too. Choose the ones with brown, coarse webbing on the outside. There's a good chance they're perfectly ripe and even sweeter. Avoid the watermelons with any visible cuts, dents, or bruising. Minor scratching is okay. I mean...