Roof Racks

I’ve just purchased a 2015 e4 and would like to install some permanent roof racks to haul my kayak, surfboards, etc. Has anyone had success with installing Yakima or Thule racks with the aluminum frame?

I have seen quite the collection of roof racks on some UTVS websights. But I’m not sure how plug and play they are.
Innovative Motorsport’s sells a roof rack for a gem it’s $500
It seems to be very high priced for what it it’s compared to the ones I have seen for the UTV’s .