Management of an active clan isn't easy.
We try to "clean" our inactive members by engaging them in a "I am here"-post on our forum in a specific thread when we have our monthly "Clean". This isn't the best way to manage users since they usually just can go in, write their b-tag (as: I am here!) and then leave without taking part of the gaming with the other users.
Alternative solution is to ask people in the clan if they can report if they see anyone that are inactive (or are trashing the game, cheating etc.) but gamers usually do not do this, even if they are active.
At best we are approx. 45 users online, but mostly it's around approx. 22 users that play daily "all day" and we manage to have a full clan nonstop with a queuing system on our forum. We do not care about how many that are active at the same time, we do however care about the end result every month and that the clan is active.
Struggling for an active clan shuld be much easier. Do you have any ideas on how to make the clan-experience and the activity better?