I just got this response from Emmakites regarding wind ranges for the Windrider 2. I didn't expect a response but I figured it was worth a shot and it was nice to see they respond!
Hi Phil,
This is Lynn from emma kites.
Thank you so much for your interest in our kites.
If it's the Freilein quad line kite that you'd like to purchase, here are the wind ranges:
It needs a run to start flying the kites when in the wind of 3~6MPH, light breeze.
For standard, vented, X vented type, the best flying wind is: 7~21 MPH
For XX vented type, the best flying wind is: 11~27 MPH
Please don't hesitate to contact me if there is any question.
Best regards,
Lynn