Man, 20oz of water between 9? I would be dead on the floor with the scavengers eating me! I take 2 bottle in my cooler pocket, and another bottle on the cart... those are gone in a few holes! I sweat like there's no tomorrow, but when it's 90+ and the sun is out at full blast... I need all the water I can get! Lucky for us in FL that most courses have plenty of water every couple holes.