Went Walleye fishing this evening. Caught a 17", 19" and 20". I generally fish for Bass, so I don't know much about this species, but I do know that they taste good!! So, I brought the 20" fish home with meto filet and put on the grill. The fish is swimming in the livewell right now, very much alive and feisty. What's the best way to put the fish ut of it's misery before cleaning it??