BIGdaddy,
Did your awning come with any brackets at all? My CVT came with a piece of flat iron bent in a 90 that mounted to the two channels in the aluminum extrusion. I just used 4 of the yakima snap rounds and 4 SS carriage bolts. They grip the bars like heck and are compatible with Thule bars as well.
Check out LabRak Thule awning mounts.
I know this is a kind of old thread, but I felt it relevant. Bomber Products makes a Thule/Yakima mounting solution. Made in America, lifetime warranty. Yes I own this company, feel free to reach out with questions or comments.