From Doug Jeffries comes this very interesting article on catch and release. I found the four step flow chart for using reflex tests to determine when a fish is ready to release very interesting. In addition, the eye position test seems like a very practical way to assess whether a fish is ready to be released. As Doug said, "It reinforces the idea that just because a fish can swim away doesn't mean it's ready to safely release."
Probably a very good idea for all fly fishermen to read this article from keepemwet.org