Yeah,

Hooking a fish in the mouth, the tongue, the eye, top of the head, the side or the tail and playing it until it is tired enough to bring it to hand after getting hog tied in the fishing line causes no damage.

I weigh every fish I keep, but I have only weighed three fish I released, all salmon, and they all swam away. The biggest was my dad's 35 pound King.

It has helped in my weight estimations the same way using a laser range finder has helped me in guessing yardages.

I agree that we should let the fish go, if we aren't going to use it, but if I catch a 38 pound wild steelhead, which I never will, I want THE WEIGHT and a photo, not an estimate.