Actually, we began to fly with bumpy wings, or tubercles, from the
Wright Brorthers onwards... Look at any ragwing and you will see the
tubercles at regular intervals......

And even the whale researchers are behn the power curve... Some guy has
a patent on tape you run along the wing at the approx. 20% of chord,
which has pits on it, like a golf ball... Makes great claims to
improved stalling speeds, etc... And of course, there are the vortex
generator folks...
What goes around comes around...

denny