Goblins and Wallbreakers in CC / Balloons / Healers

[Lola00]

Goblins & Wallbreakers
How damaging are these when you get attacked?

Unfortunately I had both of these in my CC when I got attacked. Because the attacker used a lightening spell - I couldn't tell if the goblins just broke my walls to let the giants in : /

Are they ever useful in the CC if you get attacked?
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Balloons
Do high level players use balloons? I'm still pretty new to the game and I started off using balloons as not many people had air defences. Now I see them everywhere so I wouldn't dream of using them. And of course the archer towers shoot them down.
Balloons are the only things I haven't upgraded in my lab. Should I?
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Healers
Is there a best way to use a healer? From what I've gathered she can only be shot down by air defence? and an air bomb. I read somewhere in the forum it's best to send giants in, then the healer straight afterward.
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Fighting off troops in CC when you raid.
What's the best way to fight off troops in the CC? I often will drop a barb next to a CC to see if there are more inside. If there are, I hit "next". Is there a best to fighting them off while being shot at from all the defences around? I tried once, failed miserably and quickly hit surrender... lol
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Any of the above you could answer would be a great help to me! Thanks

[TheLastClan]

lvl 6 balloons are very effective in cc but thats the only of those troops i can see makes sense to have in cc

[ryskew]

Use a lightning spell to defend against clan castle troops. Or put a barbarian near the clan castle, drag them all out into the corner. Place barbs in the middle of the group and sprinkle a few archers around them. Job done.

[NEGAMAN]

* healers are great defenders when in your cc specially when you want to up your cups

* balloons are also great in cc