i started hunting with some guys that use dogs. we also got like 6-10 inches of freezing sleet here during the big blizzard, wich just crusted over real bad. i know last weekend it was really nice to find tracks and then just turn dogs out on them. then we got this crusty stuff, and i about hit a yote with my truck almost at the end of my driveway, and he ran over that stuff like it was asphalt. he didnt leave a track or even fall thru any. but for calling i havent had any luck at all, callin in the snow, day or night. dont know, how to figure it. i tell ya though if you have never hunted coyotes with dogs, you need to do it at least once. it can get exciting really quick.