Me too. It's !Removed! ugly on such a good looking car. I see this use of marine antenna has been posted on various forums before but not read how successful it had been. If you do try and it works or fails please let me know as may try myself.
Seen reference to upgrading the rear spoiler as later models alledgedly have the antenna built into this but I'm not convinced as manufacturers usually install within the rear screen defrost wires. I may be wrong.
It seems on face of it compared to other issues that arise, a simple to fix problem but no actual solution or product seem available.
Paul