Hi there
When you launch the Blade, have a little bit of brake applied at the same time. This way you can launch in the centre of the wind window, and have total control. Get he feel of feathering the brakes against the pull of the kite and you will soon feel more confident.
I have the Blade III 4m, and it still scares me to bits. I am 11 stone and very carefull what winds I fly it in. I love it though, and wouldn't get rid of it...
Take care and fly well,
Mark Dewick