I use to have a hand auger that had 6in blades. That worked great until one day I was running tipups for pike and I got ahold of a huge pike. It's head was so big that it wouldn't fit through the hole. I purchased 8in blades the next day. I now have a power auger with 8in blades. You never know what is going to pull on your line out there. I will use nothing less than a 8in hole.

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