Why not a wing on a steamliner.
Which is more aerodynamic - a crate of beer (bottle) or a block of bricks with the same outside dimension.
The crate of beer has less cross section with the space between the bottles.....but extremely bad aerodynamic so the bricks are much better.
A lakester is the nightmare for everything called airflow....clean airflow.
When a lakester use a wing, the different of interrupt or destroyed airflow will be so small, that the increase of downforce from the wing is a big plus for going fast - a wing produce downforce with this that he break the airflow.
A streamliner is living from the airflow.....you push so much hp in.....and you still go slow....if the aerodynamic on a streamliner is bad and the airflow is interrupt.
Best example - Hoffman Markley streamliner, they add small wings on - 8 inches on both sides and slowed down by more than 20 mph.
2002 - August - Al Teague used a wing and slowed down by more the 20 mph, his last run at Speedweek was without the wing and he went again over 400....if there was not the late Nolan White he would be fastest of the meet.
The only chance to improve downforce by a kind of wing, without disturbing the airflow are small carnads, may be up to 2 1/2 inch wide when they are right designed - no road track profil - high speed profile which start to work at speed higher than 160 mph.....but this as the last solution if there is no other way to improve the performance.