I hear you and I don't disagree. That's why I recommended the history be rolling. So worst case scenario a person can stay in a less than ideal clan for a couple weeks to re-establish 'credibility'. And eventually, the 'hopping history' will roll off and no one will ever know you once visited 10 clans in 6 minutes.
I also agree with the wait 1 week method. Works charms. However, the flip side of that is I may take 10 new members in my clan over the course of a day and they all hop out, complete waste of my time. Where if I have some statistical backing I may be able to quickly filter through the obvious hoppers (some of which would fall into your scenario - which is unfortunate).
The statistics don't lie, but, as you point out, they don't tell the whole truth either. It's an imperfect system and always will be. I just think it can help a little.
I just recently found myself in a racist clan and hopped right out after being there all of a few minutes....and they took me to war no less. So on top of being a hopper, I am a war time deserter. Oh well, if it causes me that much trouble I can wait a few weeks and start over. The moral of the story is I should have done better homework (which is why I have arrived at the forums!)

