I MANAGE TO GET 5,000 GEMS BY JUST FOLLOWING THIS GUIDE
----> CLASH OF CLANS HACK <----
Ignore the other comments about "Free Gems" it's all a scam to get you to download dodgy software which doesn't even work.
The only way to get Gems in Clash of Clans is to buy them with a google play gift card or bank card. I've been using Earn2Game to get free google play gift cards to buy gems with, all you do is complete small online tasks to earn points, then trade your points for the prize you want, I always get $10 google play cards from them. Google it or click here:https://goo.gl/H7ip98
Actually you can swap your gold and elixir storage with def building since its useless for clan war
so enemy cant rip off your def building 1 by 1 instead they have to face mass def building at the centre
its doesn't matter if your enemy get 50% +++ for destroy resource building but they cant touch your TH for extra 2 stars
i tweeked it a little bit.. took the three extra walls and make the archer tower and canon sepertate with a spring and 2 walls. worked great.