Translate the passive F-duct design to the barge boards.
Step 2
Tune them to kill vortices after reaching a determined speed down the straights.
Step 3
Win the championship!

Fun aside, this design was rumoured to be released on the McLaren this year. Wondering if it was cancelled? Seems my source was lying or he is being waterboarded in a secret lair under the pool at MTC since he leaked the info to me. Poor guy.
Anyway, I think the design is possible. The question is, does the floor vortices increase drag when they do their thing to seal the floor? If they do then shouldn't be hard to kill them if you get the DRD right.