If the guadalupe river's back to flowing at a good level, rent a float tube from one of the outfitters. Bring a medium 8-10 lb spinning or casting rig and a small collection of plastic craws or cranks/topwaters. I'd pitch or drag a 1/8 oz green pumpkin zoom speed craw around fishy spots. Dont worry about the crowds. The fish are still there and they'll still eat even in the middle of 100 float tubers.
Toads for breakfast, lunch and dinner!