I was just thinking about going after their tires too. Spike strips placed at all possible entry points would not only stop the vandals, but would help you catch them as well. Of course, one would want to check the legality of that before proceeding, lest the one who does it get into trouble. Luckily for you and your club, Texas is very pro-victim and anti-criminal, especially when it comes to trespassing.
For those that don't know, Texas allows a landowner to shoot on sight anyone they catch on their property after dark, no matter what they are doing. It's a holdover from the days when most of us were ranchers and had to deal with cattle rustlers constantly. It comes in handy for keeping people out of your lawn mower shed too.