It honestly seems like GA talks about a particular piece right after we have just finished talking about it here. My question is, if the flap above the traditional monkey seat is to stop the exhaust from affecting the rear wing to much then why didn't they just design the monkey seat with a less aggressive angle in the first place?
For anybody who says that reducing the angle of the monkey seat will reduce the downforce well then what do you think two downward flaps above the monkey seat will do? They will reduce downforce, that's what.
Considering that the shark fin comes to a point almost exactly in front of the monkey seat then the shark fin would definitely be creating vortices under yaw. That's why it is my personal view that the flap above the monkey seat is there to simply smoother out the airflow before it interacts with the monkey seat/exhaust flow. Notice I made the point about yaw, imagine a long sweeping corner where the driver is on the throttle for the corner, he will want the most downforce. Now add in the vortices coming off of the regulatory shark fin. There is a good chance that those vortices hurt the monkey seat. Now the two flaps come in to help that problem, just when you want the monkey seat to be working its hardest.