I'm gob smacked by that back drop!!!!!!

Stunning..................
An old trick that was taught to me, by a fellow radio controlled glider pilot was.
For comparison of wind speed "square it" to get power ratio.eg. 6 knots x 6 =36
8 knots x 8 = 64
so, 6 knots, is half as power full as 8 knots.
I use this simple math, all the time when kite buggying.
I select the correct size traction kite, by multiplying the "actual wind speed" to see what m2 I'll be using.
I weigh too much and need lots of m2 to get moving. On hard salt yachting, nothing happens before 7knots for me. Even with a 6.9m2 sail.