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Only upside I could see with a 6" auger is it is lighter? What are people's thought on the six inch hole?
A 6 inch hole is, in my opinion, the most favorable size when everything is taken into consideration. I have taken my PB pike and crappie through a 6 inch hole ( 35" and 17" respectively ) even though I also have an 8 inch auger that I use for pike rigs. I have never pulled in a fish that would not fit through a 6 inch hole in 32 years of ice fishing.The amount of ice that needs to be removed to make an 8 inch hole is 1.78 times as much as for a 6 inch hole, so almost double the effort for your muscles, battery etc. I do like starting with 8 inch holes on extremely cold days when the holes are refreezing, since the top of the hole turns into a much smaller diameter during the day, but I don't fish much anymore if the temps. are that brutal anyway. Unless you are targeting true monster fish and know that there is a chance of getting one where you fish, or want to keep a descent sized hole open in very cold weather, there is not much reason to use an auger greater than 6 inches.
I've never caught a fish that I couldn't get thru a 6" hole.
For many nicer sized fish, once in a 6" hole, they can't turn if they happen to spit the hook.
10" can be toooooo big sometimes.
10" holes should be outlawed.
I have a 5" Lazer with a Clam plate. 3 holes in a single-man shanty. 2 for lines, one for sonar. A beautiful fit! That being said, assuming we ever get reasonable ice in southern Michigan (Saginaw Bay), I am trying out a 7", just in case I get a walleye that won't fit a 5". Hasn't happened yet with the 5": bluegill, crappie, perch, bass, walleye, even the pike I've caught through the ice. If I were to find a big cat or a bigger pike, I'd probably break off anyway. Once in a while I have an issue getting a walleye to turn it's head into the hole, though I've managed. Oh, the holes are quicker and easier to drill - though with the thickness of the ice we have here lately, it doesn't matter much. Dave
Overkill? I have said it before and I'll say it again. The first time "anyone" hooks a 10, 11, 12lb.+ walleye and tries to get it through a 6" hole, they'll wish the hole was bigger. And, I bet they don't try it a second time! Like they say, you "learn" from your mistakes. There is a reason they make 10" augers and its not for pan fishing! Just saying.