In the CW Tactics TH8 set we have 4 attack styles that, in aggregate, will give you the best approach for 95% of the bases out there. Each attack style has a separate thread on the forums:
11 Light Dragon Attack Style -- When 2 of 3 ADs are tightly grouped (i.e. ~5 tiles center to center)
Dragon Snipe Attack Style -- When 2 of ADs are near (1-2 hops) to wall edge
813 Dragoon Attack Style -- When the ADs are spread (i.e. > 5 tiles from center to center on all of them)
So, if the base you are worried about fits the 105 Dragoon attack keys above -- Read On!!! Otherwise click to the thread that you need for your base.
O.k., now that we know you are on the right thread, at 10,000 feet here is an overview of 105 Dragoon Attack.
Level -- TH8
Type -- Dragoon
Mix -- 10 Dragons, 5 Balloons in CC (max), heal/rage for spells (typically 2 heal/1 rage but sometimes 1 heal/2rage)
Nickname -- 105.12 or 105.21 etc. Tells you quickly -- DragsLoons.HealRage.
and here is a link to us walking through how to do the style in gross detail (but you get cool background music as you go ):
Clash of Clans -- Clan War Tactics -- TH8 -- 105 Dragoon Attack Style
Clash of Clans -- Clan War Tactics -- TH8 -- 11 Light Dragon Attack Style
Clash of Clans -- Clan War Tactics -- TH8 -- Dragon Snipe Attack Style
Clash of Clans -- Clan War Tactics -- TH8 -- 813 Dragoon Attack Style
Note, in the video, the bases we show getting 3 starred are all max (AD level six) TH8 layouts. So pretty solid stuff. In the war the attacks were taken from the enemy clan (packino 2 from Indonesia) used the 105 style 21 times against us scoring 18 ... yes 18 ... 3 stars ... when attacking our TH8 bases (all they did was 105 -- i can see why).
Holy smokes batman.
Hope this video helps. Comment below and/or subscribe on youtube if you like what you see.