The G rank (I'm not sure about low and high rank) poison is devastating. Especially when you use a lance and can't get away from the nox fast enough. That's why I'd use a bow, and maybe a bowgun. With the bow, you can pummel it from a distance, and if you're using the kelbi bow, can slaughter it at a distance. (assuming you have a group of other players, with, or without the kelbi bow)