A good attack strategy for Town hall level 5,6 and 7

Hey,
I'm new to this forum, I own two Clash of clan accounts I have one Town hall level 5 and another town hall level 6. I recently found out a easy way to get fast income as well as trophies. Level 3 or level 4 Giants. x5-6 Giants | 2 or 1 healer(s) 3 wall breakers (maybe more)

1. Let the wall breakers smash a hole in the oppositions wall.
   
2. Spawn the Giants.
3. Spawn the healers behind the giants.
4. Sit back and watch the giants bet up all the defence weaponry

Some times 2 healers would come in handy, you could attack from two sides and work into the middle.
*This strategy hasn't failed for me so far, I hope it won't fail you.
Good luck!

unfortunately giant healer is beat by centralized AD. Drags at th7 is easily most OP attack at that TH level, no question. However, giant healer is still very strong at Th 6 and Th5, primarily due to the fact, that most lower levels don't realize the importance of a centralized AD.