With the high wind's this week I really dont see much ice forming until at least the weekend. Looking like I will be planning on hauling the ATV or sled up for the trip between Xmas and New Years again this year.
I went and looked at a couple smaller 'early ice" lakes in the Cloquet area on sunday afternoon and there is nothing going on, and even tho the temps are gonna get colder, the wind this week will most likely not allow any of them to cap off til at least the weekend.
Looking like its gonna be closer to Xmas before I'll be walking out for early ice this year (that's 6" for me LOL)
I am guessing he is using the vexilar edge or whatever the open water graph is called since he said he has fish alarm
Personally I never use fish alarm or fish id on electronics
I am no expert either but here are some images that may help you