Company statistic is 8" auger 250 holes for (1) 1lb cylinder through 24" of ice. I personally have logged 400 holes starting around 8" of ice up to 24".
Knoc is spot on! There are just places you are going to fish that electric will not do. Think about taking a trip with your flasher, the first thing you think of is how am I going to charge it... I can fish without my flasher... What happens if its dead, screwed! I keep one propane bottle in the truck and one on the machine. They sell them at every bait shop, gas station or resort. I don't want to mess with gas anymore. There is a thousand articles on how bad it is and how long it lasts. How to take care of it when you store it.. With the propane auger you unhook it and your done. You can be done for a week or a year it makes no difference! Good luck with your decision.
Not sure were to post this but if your in the Mora, MN area the rod building class starts January 2nd at 7:00pm at the hight school. You can build Summer or winter rods. Thousands of options.
I use the flutterfish all the time! It is one of my best kept secrets. I use it with a minnow head and work the bottom foot of the water column. Lake of the woods in particular.