Single mob camping rules?

[Agreed]

edit: I know this thread started w/ single mob camps in mind, but I am hoping to take advantage of this level of mod engagement to seek clarification on a common camp that seems like it might not be legit according to the rules, even if the way it is done does make sense.

How bout Goblins in Warslik's Woods? As a lower level I could never level there because it's constantly a goblin murderfest for high levels trying to get Grachnist to spawn and drop the earring. Then, as a higher level, I did it myself - and I get it, if you're after that earring you have to constantly kill the WHOLE FREAKIN' FORT including Grachnist and Pit Fighter Dob that can spawn at any goblin's spot within it, and both of which are high enough level that if you are trying to level as a lower level there you're basically screwed the moment one of them shows up in what you'd be trying to call your camp within the fort itself.

The game design seems to favor that area being dominated by high levels aiming for the drop, imagine if Lord Shin Rae could pop up in any spot orcs spawn at in EC but minus the huge # of high levels to take care of the problem so the newbies can keep going - time to find something else to do for the lower level group suddenly.

But, I can't see how the whole goblin fort at WW can be considered a camp under the rules here. I only ever see it done this way, but is it in line w/ the rules? What should players do with that to avoid it turning into a nasty FTE-fest? When you've been clearing the fort for several hours to try to get the desired spawn, if someone could just come and see a Grachnist up that you haven't engaged yet because you're still running from the other side of the fort and it just popped... That sucks. And I have seen people for the most part respect the camp, respect the effort that goes into killing all the goblins perpetually 'til you get a drop.

Having experienced it relatively recently from both perspectives, I think personally it makes sense as a camp and I think the higher levels doing it are doing the most logical solution to the problem that the fort presents, but is it in-rules or player agreement or what?