For rapid motor skill improvement I suggest microdosing LSD or shrooms and then doing the resp. excercise/practice. Ideally with a teacher/master present, to correct/help.
Also applying the techniques from the famous "The Inner Game of Tennis" book during the trip window helps/boosts the effects for me.
The more difficult the motor skill is and the more coordination with other sensory input it requires, the better the gains.
I am tango dancer and this is a hobby that takes years to master.
Some people would say a decade or more, until you get to an acceptable level.
Even more, if you have zero musicality and two left feet, like I did, when I started. It was an uphill battle for years.
I only discovered this hack by accident, during the lockdown, about six years into this hobby.
I believe I cut years off my tango learning time, ever after. And there is strong evidence based on the feedback of people from the community I dance in, who know me/danced with me for years, before and after.
My partner only started tango two years ago. She is also microdosing regularly when she trains and sometimes even for social dancing, when we go to events where the level is very high/you are expected to dance with lots of experienced partners.
Most people believe she is dancing since at least four, but sometimes over five years.
Certainly, my sample size is two.
But it makes sense when you look at what the research on psychedelics suggests about increased neural plasticity during a trip (if that is even what you want to call it when microdosing).