It's actually a freshwater version of the dropper loop in saltwater fishing. Use a Palomar knot to tie the plastic lure directly to the main line. You can dead stick the worm or give it action with the flick of the rod tip. Eric proved the point. As Elshere notes, patience is a virtue at Casitas, but knowledge of the lake is even better.
Some guys fish only five or six spots.
Larry Elshere, who fishes almost exclusively at Casitas, has more than a dozen favorite spots he fishes. He knows the lake by heart. He said anglers who watch for stick-ups picking out of the water and where there's plenty of cover will do well this time of year. And you don't have to sight fish to get he job done. You can blind cast.