Agreed, Valley Creek browns are very spooky. It's just how it goes with a very low gradient stream that's crystal clear.
If you can, it fishes best when it's high. And it comes down VERY fast, so we're talking immediately after a major rain. If it's brown, toss streamers. If it's greenish-brown, use dry droppers just as if it were low, but you'll be far more successful than in low and clear conditions.
Otherwise, stay low, go slow and try not to make waves. Target broken water if you can, it lets you get a bit closer. It's generally a dry dropper stream, where you use a bushy dry fly as an indicator and suspend a nymph (Hare's Ear's work well) below. You will find fish rising to midges in certain holes nearly every day. These are usually the slowest, toughest holes. They are tough, they tend to stay just out of casting range, or else ignore most offerings. Perfect drag free drifts with very small flies. You can occasionally hit hatches which bring up better fish in easier locations. In March and April, BWO's are one such hatch. Size 18ish. In certain locations it also gets a few sulphers in mid May.