[jb92563]

As a glider pilot, I like the term spoilers.

Spoils the lift and reduces lifting of the rear end at high speeds in the Boxster.

The plate is part of the spoiler/dam that blocks the airflow.

Simple, effective and looks classy.

Younger folks and Racing types may prefer wings that actually use the airflow at high speeds to produce a down force, hence they have to be high up on the car to get into the clear airflow to be effective.

A low mounted wing is most likely nearly useless and mostly cosmetic.

The Race drivers know where they need to be, and they are alway mounted higher up.

Anyways, your spoiler works well as implemented unless you need extra rear end traction for racing.