Learning all about that this year, heard a total of 3 gobbles all season in Louisiana. I just gave up on walking and cold calling and focused more on sign. If I found a fair amount of fresh tracks or scratching I'd set up and call every 20 minutes for about an hour. No birds, on to the next spot. Worked out well for me, managed to call in 2 longbeards and a jake in one sit, came in absolutely silent but we're still looking for love.