I only take what i want for the pot and return other fish, another point here should be the treatment of fish caught to increase the chance of survival when returned ,
I use circle hooks to try and ensure lip hooking, makes it easier to unhook
try not to touch the fish too much and make sure my hands are wet.
i also try not to have the fish flapping on the deck and just shake off over the side where possible.
maybe barbless hooks would be another option?