Originally Posted by
Enkrateia
In general, any monster in the world that is able to be attacked can be attacked at any time. There is no user agreement section that details the proper time to wait before attacking a hunt mark, at this time. That being said, actions determined to be taken with the intent of disrupting the game play of others can be reported as a grief tactic. This disruption applies to the people actually at the hunt mark, and convoluting the "disruption" to apply because not enough people were present for you to get full credit misses the actual impact of the disruption. And because nothing is black and white, this does not mean that pulling the hunt mark will not result in a grief tactics violation. The circumstances that would cause it are rarer, but not impossible. A GM would make that determination after investigating a report on potential grief tactics.
As in several of my posts, as a player, I appreciate the players who can get people to wait a bit to give more people a chance to participate. However, unless the hunt mark is pulled in a manner that a GM finds to be intentionally disruptive, waiting is a social behavior, not an edict within the rules.