1 : Don't use your CC troops to kill off their CC troops. It can result in a total mess. rather, for CW atleast, take Attack troops in Clan castle.
- Reason : Your Clan castle troops come out one by one. and to make matters worst, They come out at the SAME spot. enemy wizards or dragons just have a gala time against them and they get 1 shot by splash! You can't control your CC troop's deployment. So why not use them for attacking? For example, carry 5 hogs in your level 4 CC instead of archers and wizards. same army composition, Much MUCH better control over your troops to kill their CC and heroes. Spread your troops, Enemy splash fail.
Reason : Your heroes have low attack speed, way higher damage output than needed, and their high health makes it perfect target for enemy wizards and archers to deal maximum damage. You are nothing but wasting 2 most important units in game for a job best suited for archers, barbs and wizards.
Also, in Clash of Clans, units attack much slower than their usual attack speed when changing targets. Hence, making archers way better against their CC. Wizards usually attack once per 1.5 seconds but ever notice how they can take more than that time when changing targets? any unit. Just observe Cannons. They take way long to change target even with high attack speed. It's because when they are about to hit their second attack, their target may be dead already.
You are using your hero's high damage output to it's least efficiency if you use them against enemy Clan castle troops.
a level 5 BK deals 210 damage per attack. under iron fist it's 120 % added damage on top. an enemy level 6 wizard has 164 health. better use bk's chunky damage to hit an enemy building :p
How to avoid this?
Luckily, you get enough time to manually check CC level and capacity in case you can't tell it's level by simply looking at it. Now Count the troops if you can as they come out.
If you can't count, simply carry enough troops to make sure you lure them all out till they stop coming out.
- Luring :Now there are many different bases to be considered.
Just try to Lure from a place which is enclosed without any gaps.
- Killing Clan castle troops. : Usually we always spread our troops and kill their CC. Your 5-10 barbs, 10-15 archers and a few wizards might not be enough to kill their CC troops along heroes.
Every balloon does a certain amount of splash damage when it gets killed.
Balloon lvl 4: 72
Balloon lvl 5: 108
Balloon lvl 6: 162
So if there are loads of low hp troops in CC like archers, lvl 5 or lower wizards, barbarians, witches, .... you can kill them all by grouping them up and then deploying a balloon so it will die on top of them and kill them all.
Here's a video of a balloon in action: