User blog comment:TheDeadDragon/Help with Kushala Daora/@comment-3315689-20120612174408/@comment-1653324-20120616165125

You need either Dragon Wind Breaker from Chameleos equipment, or a combination of accuracy, poison weapons, or flash bombs.

With Chameleos armor, you will never be blown away by the wind aura. You can now attack anywhere you want. Ideally, the head should be your target while it is on the ground. Its wind blast attack is a huge opening, and you can attack from the side of the head with pure impunity (you won't be blown away by the wind effect of the attack unless directly hit).

With poison, you need to consistently hit it with poison when its aura is down (usually at the start of the quest, after a flash bomb, or after flinching the head). Rathian weapons work really well (SnS & LS). The Gypceros SnS also works like magic against Daora.

With an LS, you can poke Daora's head until it flinches or gets poisoned. Then you're free to attack anywhere.