many accidents occur at launch... just last week someone dies in San Francisco due to a launch gone wrong. In that thread I noted that if the person had launched unhooked he would still be with us today; I was asked to post a video of what I mean by unhooked launch, so there it is. Sorry for the poor video quality, I just hope that it brings the message across and make people aware of this approach to launching.
Thanks for posting that Sarc. Sorry to hear about the death in San Francisco. You're right, it's good to have discussions about launch procedure.
I'd like to offer some thoughts:
Excellent point about not hooking in till the last moment before launch, see 6:31 in the video above "Assessing for Best Safety Practices". In assisted launches this would be normal procedure. Also when I land my kite, that chicken loop is out of the hook within the first second or two of the kite being caught.
If the kite flies away it's already depowered as it gets ripped out of your hands because you're holding the chicken loop instead of the bar. That's why when we are walking around with the bar we are holding mainly on to the chicken loop (with tension as we move into launch position) while the other hand holds the bar lightly to keep it from rotating or dragging on the beach.
For the self-launch: the thing that makes me uncomfortable about this is that the kite is not under the bar's (kiter's) control at the critical moment the kite leaves the ground and starts to take power. Then the kiter has to focus his attention and both hands on the chicken loop as he hooks in, while the kite may be flying uncontrolled; in unstable winds it can overfly the window or do something else unexpected.
We have taught here that as the kite takes flight, one hand controls the bar and the other hand goes directly to your QR and holds it, ready to pop the release if things go haywire.
Anyway a self-launch should never be done unless there is a huge amount of free space downwind (as in your video), and should not be attempted by beginners. I don't teach self-launch to people who don't have a fair bit of experience already.