I had a Yakima LoadWarrior with the 18” extension on Thule cross bars on my Outback, and it worked great!
When I bought my ‘16 Trail Premium, I moved the whole assembly over to the 4Runner. It was terrible!! It was so loud at 60 MPH you could barely hear each other inside. It was louder at 35 MPH than it was at 75 MPH on the Outback. I moved it forward and back to change the airflow, but nothing worked.
That’s when I ordered the full length Prinsu rack ($750.) It is just as quiet as without a rack, and much lower profile than the usual recommendations.