i havnt hunted B but i have hunted A twice now for bison. These animals have been hunted hard and they know the sound of a snowmobile find sign and then walk everyday to it don't ride. last year when we where their we got the first one walking about 5 k from camp then people came in and started riding sleds around and everyhting went back into the bush, took a couple days before they started walking as well out from camp. once we where all on the same page the animals came back out and everyones tags where filled with in three days.
It is a awesome hunt but we have been therir in december riding quads due to lack of snow so have both sleds and quads ready depending on weather conditions. just call up their and see how much snow their is before you go.
have fun!!!!!