i checked out both the yakima and thule fairings... if you take a look at the yakima fairing install it, seems the the outer brackets are specifically made for round yakima bars, which we don't have:

http://www.yakima.com/instructions/1032276b-instr.pdf

With the Thule fairing, I cut off part of the square bracket (as instructed by manufacturer) and threaded the screw though the upper bracket and mighty mount assemby, then tightened everything down.

I wanted to go with Yakima, since the rack components are Yakima. But the Thule fairing presented more viable mounting option. I just installed the Thule fairing in reverse so the brand name is not facing outward.