I remember years ago, I was in my early teens and my dad hooked a nice laker.
Got it up to an 8" hole and it was gaffed and pinned sideways across the hole. Ice was about 20 inches thick,
making it very difficult to manouver the head into the hole. We drilled another hole right beside the first.
Once near the end, we switched to an ice chisle and knocked out the remaining bit of ice at the bottom of the hole and chipped at the edges until the fish got through. 15 lb. laker was the result.
We've had a 10" power auger for the last 20 years and I wouldn't go back, unless fishing
smaller lakes for small fish. Then I can see the 8" manual coming in handy since the power
auger is heavy to carry unless you have transportation.
I drill 4 holes overlapping them then chip out the rest to make square holes
approx. 15 inches square for dads ice hut.