When fishing for dinner and I forget my net, I've had luck landing the big ones almost bass style. As the fish slides up along the boat, my hand slowly moves toward it - then I thrust my thumb in and clamp down on the lower jaw. Then do a quick hoist into the boat. If landing for someone else holding the rod - once the thumb is clamped, quickly scoop from behind with the other hand and lift in. It may take some practice to get the timing and technique down. And you will probably end up with some bloody fingers from the sharp little teeth... The other key is having quick reflexes. If the fish darts before you got a good clamp, the hand holding the rod has to be ready to dart with it to avoid snapping the leader. Make sure the drag isn't too tight at this point as well - your rod tip should point directly at the fish as it dives to the bottom. Oh, and don't try this with rapalas and other lures with 2 sets of hooks (especially trebbles). Last time I tried that I lost the fish but ended up with both trebbles in my hand!!

If releasing the fish, use plyers or forcepts and just reach down, grab the hook and twist. If you must have a picture, take one while he is still in the water. Trying to get him out will probably cause him harm and
\or cause you to lose him and the chance at a photo.