I am a TH7. Usually I use a random mix of barbs, archers, and goblins to farm (2 barracks full of goblins, 1 with barbs, 1 archers, they train until camps are full). I want to get dragons to level 2 (all other troops are maxed), but I always have a hard time getting huge elixir profits. Is there a better army I could use? What bases (and how much loot) should I attack?

