The problem of proper hook and release technique has just been made a whole lot easier.  The answer to releasing fish is the Ketchum Release.
These tools are easy to use- just hook it on the line and slide it down
over the fly,  You never have to touch the fish,it never leaves the water and swims away un-harmed. You save the fish and your fly too.

Ketchums come in 3 sizes, one for Trout, one for Salmon and one for Bugs and Bombers. $21.95 CDN $14.95 US.

Add the Ketchum Releash, a retractor which hooks on your vest extends out on its own string, to keep you Ketchum at the ready. 
$9.95 CDN $6.95 US.