Great comments on this thread, a mix of tactical and philosophical. Love the feedback on the swing, that is spot on. Some thoughts: (Tactical) 1) I do prefer a weighted fly in a boulder field. Sure you might lose it on a rock, but I always found that flies that dip, weave, and swim deep are better around rocks. Go heavier than you think you can on the fly + tip. And don't get too attached to your flies. Unless you are talking about a low / clear water summer spot, then three feet of leader is fine. 2) Fish move! For all you know that fish arrived 5 mins after you fished through it, and just in time for your follower to intercept it. 3) Color does matter, unfortunately. To some fish. I have lots of experiences fishing through a run with different colors and finding fish on the second or third pass. One favorite in BC was a time I fished a run three times, got nothing on the first two passes, and landed three on the third pass with a third color (same pattern). You never know. (Philosophical) 4) Your turn will come, just believe it. Find things (tips, flies) you can fish with confidence and stick to it. Every time you see someone catch a fish, learn something about it (the specific lie, the speed of the water, etc.).