In Legend of Zelda Phantom Hourglass how do you defeat Geelok Two-Headed Dragon

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(summary at end if you just need reminding!)

You have to use the grappling hook on the poles to make diagonal ropes. Each dragon head is vulnerable to damage from other, i.e. fire will damage the ice dragon head and vice versa. Sometimes a dragon head will come down the screen and attempt to bite you (it will also bite the rope, disconnecting it from the poles) - just keep moving out of reach and you'll be fine.

If the head on the right rears up to shoot at you, quickly attach a grappling rope bottom left to top right. If the head on the left rises to shoot, attach from bottom right to top left. This will cause the ball of flame or ice to damage the head of the opposite dragon, and after a few hits the dragon will fall, but all's not over yet!

A tidal wave will come at you down the screen. Tap on a pole to jump up onto it, avoiding damage. Jump off again when the water settles, and either slash the icebergs that flow down or move out of their way until the dragons reappear. Then repeat as above until they get REALLY angry and bite away two of the poles, entering the next phase of the fight.

One of the heads will 'power up' its attack by sticking out its tongue to the top of the touchscreen. Use the grappling hook to attach the tongue to one of the poles, causing the dragon to bang its head on the pole. When it's stunned, attack the head with your sword. Keep doing this (and dealing with any resulting tidal waves/iceberg attacks) until the dragon dies.

So...to summarise:

1. Use diagonal grappling ropes to deflect balls of flame or ice back to the vulnerable opposite head, until the dragon falls.
2. Jump onto a pole to avoid the tidal wave, then jump down again.
3. Avoid or slash the icebergs until the dragon reawakes.
4. Repeat 1-3 until the second dragon attack phase begins.
5. Wait for a dragon head to stick its tongue out (top of touchscreen).
6. Use the grappling hook to attach the tongue to one of the 2 remaining poles.
7. When the dragon is stunned, attack it with your sword repeatedly.
8. Repeat 6-7 (dealing with intermittent tidal waves) until the nasty guy dies.

Ta-da.

1. Use diagonal grappling ropes to deflect balls of flame or ice back to the vulnerable opposite head, until the dragon falls.
2. Jump onto a pole to avoid the tidal wave, then jump down again.
3. Avoid or slash the icebergs until the dragon reawakes.
4. Repeat 1-3 until the second dragon attack phase begins.
5. Wait for a dragon head to stick its tongue out (top of touchscreen).
6. Use the grappling hook to attach the tongue to one of the 2 remaining poles.
7. When the dragon is stunned, attack it with your sword repeatedly.
8. Use diagonal grappling ropes to deflect balls of flame or ice back to the vulnerable opposite head, until the dragon falls.
9. Jump onto a pole to avoid the tidal wave, then jump down again.
10. Avoid or slash the icebergs until the dragon reawakes.
11. Repeat 1-3 until the second dragon attack phase begins.
12. Wait for a dragon head to stick its tongue out (top of touchscreen).
13. Use the grappling hook to attach the tongue to one of the 2 remaining poles.
14. When the dragon is stunned, attack it with your sword repeatedly.
15. Repeat 6-7 (dealing with intermittent tidal waves) until the nasty guy dies. R
16. Use diagonal grappling ropes to deflect balls of flame or ice back to the vulnerable opposite head, until the dragon falls.
17. Jump onto a pole to avoid the tidal wave, then jump down again.
18. Avoid or slash the icebergs until the dragon reawakes.
19. Repeat 1-3 until the second dragon attack phase begins.
20. Wait for a dragon head to stick its tongue out (top of touchscreen).
21. Use the grappling hook to attach the tongue to one of the 2 remaining poles.
22. When the dragon is stunned, attack it with your sword repeatedly.
23. Repeat 6-7 (dealing with intermittent tidal waves) until the nasty guy dies. epeat 6-7 (dealing with intermittent tidal waves) until the nasty guy dies.