I made easily to Crystal I with bloons, also a Th9

I ran out of elixir and the trophy push week was over so I was glad to come down to farming. Highest trophy count and base from that time:
http://i.imgur.com/Xds2Pwy.jpg?1
Watching the video made it very clear to me at least why around 2200ish you hit the wall. You were using the same strategy to all of your attacks: overwhelm all the defences and wipe out the place. That works as long as you can find those unwisely placed AD-bases, but the higher you go, less there are to pick from. I, too, faced the same issue so I knew I had to adapt (or die). Maybe with these changes to the strategy, you can easily make it up there
Army comp was pretty much the same. I used 20 minions and sometimes two dragons, but the amount of balloons, about 30 was same. The strategy to take out queen and CC is spot on, but the deployment of the balloons is very different. In order to "ensure" 2* victory at least, one has to pick a base where the TH is off center. More the better. Then, instead of aiming so directly at the defences you send in the waves of death
Snipe all possible ADs, CC troops and queen with ground troops and lightnings.
(Dragon to tank if necessary)
15 balloons, swiped across the long side closest to TH.
Wait 5-10 seconds.
15 balloons, same swipe.
Wait couple seconds.
Minions, swiped the same way right after balloons
(Dragon following to mop up)
King and queen, if not used to snipe ADs earlier.
This wave of death can win fully maxed out TH10. Sure, picking the targets carefully is important and you don't want to aim fully maxed centralized AD bases. Prey for the weak and you get 100%, but you can get 2* from just about any base. And 1* by just dropping the 30 bloons on the enemy buildings
After the strategy change success rate: 100%