Lots of clash-of-clans questions are about "How to attack this base" even after the decision to make those question off-topic since these questions are usually from new users, who have no idea about this decision.
My suggestion is that whenever someone uses the Clash of Clans tag, a red pop-up will show up saying:
Please make sure the question is not about how to attack a base, which is considered off-topic here
The pop-up would only be seen by people with less than 102 rep (to include people that got rep from assoc. bonus). Can this feature be implemented?