Librarian...........Welcome to PAFF , You will learn alot on here from these folks and there are many on here that fish Valley creek , I'm not one of them although i'd like to check it out sometime and the rest of the streams these folks talk about in that area. The one thing that stands out for me in what you wrote is you say "The last time i was there it was like this and i caught 2 on nymphs" then you ask what you should be doing different? Catching 2 trout , on flies , even on familiar water is nothing to scoff at in fact it's a pretty good day , you have confidence in the nymphs you used go back and do the same thing you did the last time and if you succeed again your confidence will build. Confidence is one of the big things in fly fishing that doesn't get talked about alot 'cause i guess it could be mistaken for bragging/boasting and most don't want to come off that way. If something works for you stick with it and build your confidence and you will get to the point where you will know that your flies and techniques will work , it's a process , sometimes slow , just use those nymphs that you used the last time and keep the thought in your mind that they worked before , they will work again , maybe just a little better , not always , but enough times that as you improve your catch you will gain confidence and you'll come to know that if I can get out to fish today , no matter what the conditions are , I can catch a couple. Let us know how you make out and I hope you nail a few.