Took me quite a while to do them too.
I just kept kicking it away and keeping my feet out.
If you kick it and then keep your feet close together your more than likely able to land on it.
Sorry if that didn't make any sense lol. But thats how i learnt.
snapped my deck at the works today.
tailwhiped the big funbox and it just went in. i landed clean and hardly put any pressure on the deck, the deck wasnt bent or cracked before and i had ridden it for 4 weeks.
We had been there fro about an hour and a half and we ended up having to go home
EDIT: ive worked out now that i only had the deck for a month (exactly)