I'd say the biggest animal caught on my line that I let go was an alligator (not sturgeon) that was about 250 pounds.

This year would be: 44 pound king, 42 pound king, 40.5 king, a buttload of chummies in the high teens low 20's (they seemed smaller this year ), but the one I wish I didn't let go was a 32 pound bright ass hen that I had caught immediately after catching and punching my card on a 35 pound buck.

It doesn't bother me to let any fish go. It only bothers me if the fish lets go before I get to let it go...lol