Fellow Houston rider here. I use Skratch in the first bottle and Nuun in the second, and then I carry Nuun in the jersey pockets for all rides now. I normally plan a route that will take me past public places to get water. My favorites so far have been one at TC Jester and Ella and the other is in Memorial Park, though my longest rides are 35 miles right now. I will go through 1 bottle/24 ounces in 10 miles and one thing that has helped a lot has been the reminder on the Garmin to tell me to drink.