While I've heard a good deal from searchers about proprietary/broker channels, I've not talked to many searchers with any kind of repeatable method of finding & working with river guides. Is anyone able to share successful experiences working with river guides? In particular, I am interested in the who (who is a good river guide), the how (how did you find the guides), the when (when is it a good use of searcher time to work with guides), and how (how do you know the guide can be helpful in your search)?