FLIPPIN, Ark. (May 7, 2019) – Falling water and fluctuating conditions told Zach Axtman that he’d need to soak his bait with a slip bobber rig to keep action coming at the opening event of the 2019 National Walleye Tour presented by Cabela’s and Bass Pro Shops on Lake Winnebago. Ranger pro Zach Axtman (left) displays his first place trophy at the Cabela’s National Walleye Tour event at Oshkosh, Wisconsin, on May 3. Dissatisfied with the results produced from trolling, Axtman…