Easy clan hopper deterrent
Everyone has trouble with clan hoppers. Im not sure there are any real solutions, but I have a simple and effective way to deter hoppers from the request and run.
Make it so that when you leave a clan, you lose all your Clan Castle troops.
Simple and effective.
Sure, you can request and raid, but that takes time and effort. Also gives clans time to "catch on" that they didn't donate.
[Edit:] With feedback, instead of making this automatic, create as a feature the leader can choose for his own clan. Wipe troops upon leaving clan [on]\ off.
This should help those that leave to visit/help feeder clans and friends.