Wooops, maybe I did not explain exactly what I meant then....
When high wind - one can of course park the kite easy, or just fly it back and fourth up high going down the line
But the more difficult part is to fly the kite very low, maybe backstalled slightly occasionally to put it exactly where you want it, so it is just a natural extension of you, and you do it on the backbone without thinking, and it does not hinder ANY moves you do - but will still give you way more options IMO.
In order to be able to do this, you need a kite that can be depowered HUGELY, as the windspeed itself is the problem, when you fly the kite low across the window
As you say Sandbag - it is even worse in big waves where you scream down the waveface in your bottomturn, true.
But my point was - that the windspeed itself will make the demand that small kites (3 to 5m2) used in this wind, has more depower (less camber) than their bigger brothers (7-8-9m2), eventhough they are "pleasantly" powered, and equally powered, going halfwind or for freestyle
Simple physics that one can feel immediately out there in waves, when you are out often with and in 4 to 5m2 kites/wind
The thing that happens with most kites is, that it will pull hard when deep in the window so you get a slightly bigger radius, or a lot bigger - so your path on the wave is sometimes dictated by the kite
Instead of (with a more depowerable kite) a free flowing carve where you can do it either tight up the face, or fast in a drawn out curve down past a section - FREELY like you wish
This is not a problem with big kites 7-8-9m2
And in these sizes and bigger, parking the kite is actually more difficult or not possible if the wind is'nt sligthly side-off.
Where it is the other way around with the small kites - easy to park or almost park, and difficult to fly it low if you go aggressively vertical on the waveface.