One thing that has never really been investigated or discussed at length is "Rooting" (aka-grounding) and " internal connection connection".
Since I am an old puke, my cross training is in Ta'i Chi.
Many moons ago Gem posted my article on TC and Karate.
TC.---gives great emphasis of grounding and internal connections.
This is not to say that one is rooted to the ground--immobilizing oneself, but at the point of finishing a block or delivering a strike, one in connected internally and rooted to the earth.
It is harder to see in Uechi, but in the kata, and i ask this, one is never constantly on 'both feet" or any one foot as the weoghting is constantly shifting without giving visual cues to an opponent that the internal Ki is constanly in motion.
However, I think at the point of attack or the finish of a block, an instant of what TC would call "double weighting" and total internal internal connectiion is the ideal.
Most of the time I think I am talking in a foreign dialect when I raise these training points, but I willl risk it in this hello to Sensei Rabesa.
"All Enlightenment Gratefully Accepted"