Best ice auger SHAFT for use with a cordless drill?

[BearLakeFishGuy]

That is why I said that I'd need to drill overlapping holes. However, not necessarily. I tried my friend's 6" Nils out yesterday. You can drill overlapping holes with it, BUT you have to start the second hold very SLOWLY and perfectly vertical. Went through 7" of ice, overlapping with no problem, once I figured out how to start the second hole.