How cool! The new Ultra has a foil boarding wind range chart. First foiling chart I have seen by a manufacturer so far

airush.com/2017/kites/ultra/

Thats really impressive if its true. Fortunately I'm the same weight as the chart so could be out out kiting on my medium twintip in 6.5 knots.
Not real quality kiting I'm sure but better than gardening and mowing the actual lawn.

Yeah. I'm not entirely sure what a 'Medium sized' foil is.... perhaps talking about surface area of the wing?