I have fished in the Blanco State Park a lot. It is a very well kept and super clean park. Lots of shaded bank space and spots to fish. As for the fishing there are lots of Sunfish,Bass,and Catfish. There are lots of spots along the river that are good. The further away you are from the swimmers the better. Worms were the best bait for me. You will really enjoy the park not only for fishing but just to relax. The City of Blanco also has some nice Restaurants,shops,and a super market. Hope you have a nice visit and let us know how you do.
Side Note: During this time of the month I would fish shaded areas and by ledges and drop offs.