I agree Chris.. I dont go anywhere this time of year without the Millacs Chisel smacking the ice every few feet.
If anyone out there is looking for a good chisel, you have to check those out closely. No other chisel compares to them and you can easily penetrate 3″ of solid ice on a good smack. Its much safer exploring when your chisel does its job easily and there is no excuse not to constantly check the ice thickness.
I picked up my chisel at Fleet farm. I checked into them and there are 3 different models that I know of. One is a small chisel(30″), the next is a 50″+ one piece, then there is a heavy duty 2 piece chisel. The heavy one I had would go through about 4″ of ice(got stolen). I have the one piece mode now that is a bit lighter(what the store had).
And no, I am in no way affiliated with Jiffy(who makes chisel), but its an excellent product that I would recommend to anyone looking for a GOOD chisel.