Survivors would complicate things, yes, but for the killer even more than the pack in my opinion.
First thing I'd assume is that, since every werewolf obtained their lycanthropy from another werewolf, the pack probably has the process of breaking the bad news and/or recruiting newcomers down to a science by now. So while leaving survivors will cause the pack to have to either put the hunt on hold or split up, it would be at the expense of giving the pack, more likely than not, a new member.
Worse than that, that new member has two things that will make life for the killer even harder:
#1: Knowledge about the killer.
#2: A vendetta.
The survivor isn't just an extra number to the pack -- the survivor is a witness. And if the pack hadn't yet figured out who was the killer yet, they'd know what questions to ask the survivor to help them figure it out.
Werewolf #1: "What color was it's fur? Black? White? Brown? Red?"
Survivor: "Well. . . Brown, I guess."
Werewolf #2: "Okay, so it's not John, Alice or Mindy. What about its teeth? Did it have all of them?"
Werewolf #1: "Based on the bite mark, I'm going to say yes."
Werewolf #2: "So it's not Floyd or Henry either. That leaves Tasha the only one unaccounted for."
With that in mind, the killer should have an invested interest in making sure she doesn't leave any witnesses. Ergo, if I was the pack, my expectation would be that the survivor is now a target.
So it wouldn't necessarily be dividing the pack between hunting the killer and initiating the survivor. It'd be divided between hunting the killer and setting up an ambush at the survivor's home.
well guy could be normal before being bitten, but as you said shift is brutal so he can become unstable then something bad happens and he goes guano loco.
That's a different problem altogether. A savage werewolf just has no control, and by extension, no cunning. Which, frankly, I think would be the expectation for newcomer werewolves; that they would need to shift in a controlled environment under supervision however many times it took them to adapt to it.
how do you track someone because plumbers and accountants arent trained like drug,exsplosive and surivivor seaking dog.
You're confusing tracking like a wolf with tracking like a human.
Frankly, I wouldn't consider a werewolf to need
any of their heightened senses or abilities to be able to track down the killer. I'd expect them to be able to do it just by considering their experience and using their imagination.
If you've never seen an episode of
Criminal Minds, watch at least the first ten minutes of one. The very first thing they do is put together a detailed profile based on pretty much just asking themselves what kind of sick bastard would do this and how could they get away with it?
No, I'm not suggesting that the pack would be criminal psychologists. They are, however, werewolves themselves, ergo they actually know a great deal about the mindset of their target because it will have plenty in common with their own. They wouldn't need to be master psychologists -- they'd just need to consider what they themselves would do if they were in the killer's position.
This scene comes to mind:
ohn Connor: Where are we going?
The Terminator: We have to get out of the city immediately and avoid the authorities.
John Connor: Listen, I need to stop my my house. I want to pick up some stuff before we leave.
The Terminator: Negative. The T-1000 will definitely try to re-acquire you there.
John Connor: Are you sure?
The Terminator: I would.
Nobody will know what it takes to live with lycanthropy better than someone who has it himself. So even if they didn't know who the werewolf was, they would know what the werewolf would have to do and how they would likely go about doing it.