Vortex Generators (Maybe even Winglets!)

I recently read a post talking about how vortex generators can reduce aerodynamic drag on a motorcycle by creating laminar flow around the rider, preventing the rider from creating turbulent flow.

See: http://canadamotoguide.com/2016/05/04/motorcycle-aerodynamics/

Now, I think most of us don't have access to supercomputers to model vortex generators on a motorcycle, but for the average rider, are there rules of thumb with vortex generators? Can laymen reduce parasitic drag on a motorcycle through the deployment of vortex generators?

Most of the vortex generator kits I have install on most general aviation aircraft are small and could be made easily. They area mostly 1/4” angle 1” long the leading edge is curved. They epoxied in place. They are not just randomly installed.

Aerodynamics is a complex subject, and not necessarily intuitive. I took a couple of courses in it in engineering college; just enough to know I don't know much.
The odds that you could come up with a system which would make any significant difference without a significant investment in modeling and/wind tunnel time are slim. Too many variables in real-world conditions, rider sizes and positions, and for what benefit?
FWIW, even your linked-to article contains errors. A bike's drag coefficient of 0.6 doesn't mean it has more drag than a large SUV. That coefficient needs to be multiplied by the vehicle's frontal area to determine total drag, which the author apparently overlooked.

Hard to clean

Nuisance to clean (on planes)