I dive Lake Travis frequently when I am not deployed. Realize if you don’t get in the water early, the students will stir it up in the shallow depths. Last year, about this time, the visibility was great below 60 feet. My wife is still in the area and dives with our local shop if you have any questions about the current state of the Windy Point Diving. Another recommendation if you just want to blow bubbles. The Comal River, great vis, great temp, lots to see....just shallow. I like it for treasure hunting...tubers lose a lot of neat stuff. good luck.