It's time (kamm back for 2011 Hyundai Sonata)
 

Been thinking of building a Kamm from the top of the rear window to extend to the end of the trunk, and want to attach it in a way where it is adjustable in angle.

Trying to come up with a 'hinge' of sorts for the leading edge and then have arms at the rear to be able to adjust it.

Also, should I fill in the sides or leave them open?

The quest for 50mpg is on and I just received my brake drag reduction clips as well.

Is this for your 2011 Hyundai Sonata GLS?

Yes.

Please post some photos including a side elevation, this should get the comments to roll in.

You'll need to fill the sides.

Pics?

Haven't started yet, but will post pics when in process.