Everything said above, plus I usually have a bed nearby with back up equipment plus food.
This way you can get back to the fight before Yagluth regenerates his health, as he does if your gone for awhile trying to get back.

On the other hand, playing single player, I try and tame 1 and 2 star wolves, atleast 20 and bring some lox'es with me as well. Basically have a place close by Yagluth and just run over with all your critters and they will get his health down enough so you can finish the job. Takes longer but it works.