Sorry, that I need to say that, but in my opinion, this is a very bad answer. Content should be made for everyone, not only for people who are home all day long and not working. 
 
	 
 
	Maybe, if you want to keep the 12h hunting time and it's possible, you could add an option for the party leader to pause the time with a cooldown of something between 3 and 6h, so that it can't be abused (pause, encounter, continue, catch, pause, ...). This would give everyone the chance to reach the top 20% and not only the above mentioned people. 
 
	Or another option: You simply split the time. Like if you make a group, which is fixed for the week after creating and starting, this group can hunt 3x 4h each during the week. This would also give everyone the chance to compete