Jdaddy,
For the years I lived in Berks, I was a member of Tulpehocken Chapter of TU. I made 3 or 4 meetings total, over several years, mainly because I had a repeated, ongoing commitment that feel on the same evening as the meetings. So I only went when there was a date change or cancellation on the other obligation. I am now a member of the Valley Forge chapter, but don't make those meetings either.
I've never danced around the fact that I'm not, nor have I ever been, heavily involved with TU. A paying member, and I support what they do, read the newsletters to keep up to date. But that's about it.
As far as non-profits in general, by far the one I've put the most time and money into is the United Way of Berks Cty. I realize that's not conservation, but it's important to me. I have been heavily involved in it.
As for conservancies, I am a current member of WPC and have also been, at various times, a member of Clearwater. There was a time when I was more involved but lately time constraints (work and family) have taken their toll both on my fishing time and all non-profit work. So it's kind of like TU these days, I give money but not much time, though the money is more than I give to TU. I would like to, and plan to, get to a point where I can get back into it more than I am. When the kid gets old enough, I suppose, to get him involved in conservation.
I would challenge you to look at the salaries, grant writing costs, overhead and expenses of these organizations that your propose give such great bang for the buck and advise me why it is that you feel that the average conservancy is of greater value.
It's really very simple. Long term, I think development is the greatest threat to watersheds, and preserving more undeveloped area in those watersheds the best way to protect them. The issues that TU addresses are natural side effects to development. To me it's prevention vs. cure. Not to diss either. But my heart lies on the prevention side. Trying to cure specific threats is akin to playing whackamole. Knock one down and another pops up. But undeveloped land prevents many of those problems (not all, I know), and my enjoyment of such resources lies not just in fishing, but also hunting, hiking, etc. as well.