For six years, New Braunfels has tried to keep rowdy tubers from tossing trash into its rivers with a series of ordinances barring them from floating through town with coolers larger than 16 quarts or from carrying disposable bottles and cans. Now, a judge has sunk the effort, the latest blow to the city’s attempts to regulate water recreation that can draw tens of thousands of tourists to the Comal and Guadalupe rivers on any busy summer weekend.More from SA Express-News. “Support the Ban” activists are urging an appeal; Learn how to be involved here.