The park is just up Interstate Highway 37 near Mathis. No matter their size, though, rainbow trout are aggressive fighters that will attack a variety of baits and lures. This should continue for several weeks at Waldron Pond. Most anglers use the very lightest tackle they can find. A No. 8 hook or smaller works best.
Trout go for tiny lures too, mostly small jigs, spinners, spoons and flies.
The flashier the better is a good rule of thumb. For natural baits, it's hard to beat salmon eggs, dough baits, cheese and corn. But some anglers find success using worms or small minnows. Berkley makes a scented dough bait that I recommend. It's called Berkley Power Bait, made for catfish.