I'm not generally cynical, but I've got to weigh in on this one, and I guess my take is going to seem EXTREMELY cynical. I've only been on this site for about two months, but I'm incredibly appreciative of the advice the people on this site have shared. But you guys don't know me, and you don't owe me anything.
Those who have researched and found wild trout streams that are off the beaten path are well within their rights not to share that information with ANYONE. You worked to find it, you are a responsible steward of it, and you deserve to enjoy it without someone going in there and spoiling it for you AND for the other people who appreciate it and work to preserve and protect it. I remember as a kid, I regularly fished this out of the way farm pond that was owned by a friend of my family. The thing was teeming with bass and fat bluegills and pumpkin seeds. It's where I learned to fly fish with a yellow cork popper. Even as a ten year old kid, I didn't keep the fish -- primarily out of respect for the farmer who let me fish there whenever I wanted. No one else knew about it...it was my spot. Then one Saturday afternoon, my dad dropped me off there. And there were three guys fishing in my pond with a minnow bucket. As I walked over to talk to them, I noticed a stringer with four huge largemouths on it. They left shortly after I got there, took their fish and left behind a pile of tangled monofilament and some cigarette butts. I NEVER felt the same about that pond again, and over time, I never caught fish with the frequency I did when I was the only person that fished it. While I never ran into those guys again, I began to see telltale signs, usually some empty Eagle Claw wrappers or something like that, that I wasn't the only person who fished there. Now, try to imagine how you would feel, and the other people who love that water would feel if you went to your wild stream and saw litter, or dead fish or saw people fishing there who didn't respect it? I, for one, would be sick about it. You would feel like that Indian in the old anti-pollution commercials from the 70s.
So if you have a close friend you want to share your stream with who you know won't spill the beans, then take them. But although people on this board are nice, unless you've met them in person, fished with them and observed their ethics, how do you really know what kind of person they are? You're trying to be nice and helpful but seriously, what's to stop someone you've revealed your treasured spot to from telling everyone they know? Really?
If you care about the fish -- and it's obvious that you do -- and sustaining the untouched, virgin beauty of some of these streams, I would not consider you a bad person or a selfish person if you never told a soul.