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How big were these walleyes? I had 2 26" Eyes on Mille Lacs this winter, and neither had any issues in a 8" hole. Last one came through 22" of ice.
buy a older used jiffy 10 as a second auger. Although there heavy they run forever.
I'll echo that ^^.Jiffy model 30, 31, or 34 with 3hp tecumseh engine. Find one that was well taken care of and run a synthetic 2-stroke oil. JMO.