I have hunted coyote a lot in VT and up in Aroostock County. Snowfall, depth, and deer behavior are major impacts this time of year. After a deep snowfall, the coyote are literally following deer herds in their footsteps. The deer will be breaking path, making the going easier for the coyotes and, with the coyotes pushing them, the deer tire and the weakest eventually fall behind, at which point the fresher coyote move in for a kill.
If you can cut deer trail on your snow machine, swing wide and get out in front to set up, you will often get a good shot(s) on coyotes with no calling required - they'll be right on the heels of the deer. Similarly, wounded deer calls in close proximity to deer sign will often yield much better/more rapid response because it is something the 'yotes are expecting.
Envy you the monster brutes you get Down East ;-) Enjoy!
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