I have flwon my Blade II 4.9m around 5-6 times and with enough wind find it pretty easy to get good air (loadsa pics of me on my website last time i went up to selsley).
I just try to brace myself as good as possible on the ground (you need shoes with good grip when on grass or u'll scud), get the kite at the edge of the window where it doesn't generate enough pull to drag me out of the brace position, but so it satill gives enough pull (knowing when enough is "enough" takes a bit of time to get used to) then i quickly turn it, and when it is in the middle of the window swing it upwards and when i feel the most upward lift, i jump (if it hasn't taken me already)!
Pretty easy for me, i'm only 11 stone;)
Tried the pendulum as well, but haven't got the hang of that yet:p