In July of 2021, THULE is coming out with an updated 300R 8" and 11" high Rain Gutter Mount that works with the whisper quiet THULE Aerobar and THULE EvoWing load bars (not the old, traditional "square" bars). I just installed a beta product test sample directly from THULE last week on my 2020 Jeep RUBICON with the Sky Touch retractable top. The new mounts are absolutely awesome. They do not creak like my old THULE square bars, and the Aerobars hold up to 200 lbs of properly distributed weight. Most importantly, they are nearly silent at interstate speeds of up to 75 mph. Just a stellar new product. So stay on the look out for them later in 2021. I can't recommend them enough. Help is on the way!