Let's make sure we all pratice good C&R procedures while engaging in this opportunity here is some helpful info-

From Ministry of Oceans & Fisheries- Canada:
Catch and Release Tips - Sport Fishing
Practicing good catch and release techniques begins before you catch the fish and doesn't end until after you set it free and it swims away.

Before you catch the fish:
• Use appropriate tackle, not too light, so you can play your fish quickly.
• Use barbless hooks – not only is it easier to remove from the fish, it's the law!
• Avoid using stainless hooks, they won't disintegrate when stuck in a fish like the others.
• Keep alert when angling to keep from deep hooking.
While you're catching the fish:
• Play the fish as quickly as you can so you don't tire it out.
• Assess the fish: size, condition (i.e. where it's been hooked), and species while it's still in the water. A fish sling made out of meter sticks and some cloth can measure the fish while it's still in the water!
While releasing the fish:
• Keep the fish in water. A fish needs water to breathe, and water supports the weight of the fish.
• Handle the fish as little as possible, protect the slime! Removing even a little bit of the protective slime layer of a fish leaves the fish open to fungus infection. Wetted, bare hands are best, and wetted cotton gloves are preferred over wetted wool gloves.
• Use soft, knotless nets or no net at all—try using a fish sling.
• Unhook the fish using a pair of long nosed pliers. If the fish is deeply hooked, or you can't remove the hook, cut the line as close to the hook as you can.
• Don't squeeze the fish, as you will causeinternal organ damage.
• Don't handle a fish by the gills or theeyes, this will kill them.
• Try to release your fish in a quiet patch of water so it can swim into the current again when it's ready.
• If your fish does not immediately swim away, revive it by holding it correctly oriented, facing upstream. Move it forwards and back to keep water running through its gills. Be patient, this may take a bit of time. When the fish begins to struggle, let it swim away.
Factors affecting fish survival (if it seems unlikely that your fish will live, consider keeping it if it is a legal fish):
• Where it has been hooked – hooks piercing the eye, gill, or brain area usually results in the death of a fish.
• A fish with bleeding gills is unlikely to survive.
• If there is a large temperature difference between where the fish was hooked and the surface water temperature, this increases the amount of stress the fish is subjected to.
• When some non-salmonids are caught in deep water, the pressure difference between the surface and that where it was caught will inflate the swim bladder to the point where it will push the fish's stomach out its mouth. There is little chance of these fish surviving after release.