Regularly there seems to be accident reports that suggest a rider launched too big a kite. There may be an element of truth in this but I find it hard to believe that this is the main factor. A kite can be held whilst way way overpowered. Perhaps it is more likely that it is a combination of kite size and loss /lack of control, with the loss/lack of control being the predominant or at least equal factor.
After such reports we often see the start with one hand on the CL, followed shortly by start unhooked suggestions. Fine, do that if you want to, but imho the emphasis should still be on staying in control. If you are going to do either of the above you should still have a plan to stop the kite flying up. You need to be comfortable dropping the top hand to the bottom of the bar and perhaps more importantly, once the kite has rolled up walk a little down wind to unpin it rather than yank it off the sand and have it fly up and back. Having the skill to caress the kite off the sand is probably more important than where your chickens loop is held imho.
Having said the above, I don’t travel much nowadays and so I don’t see many other kiters. Are there many peeps launching kites that are so oversized that they could not be held if conservatively controlled at the edge of the window?