Last time I checked penertrating concrete requires more sharpness than penertratkng flesh.
The whole point of using Shigan is to target vital areas, such as the heart, lungs, etc. Obviously this cannot be done properly if the tool you are using is completely flat. That is why comparing Kaku's completely flat nose to Jyabura's sharp and precise finger is faulty.
Stationed? Cap. Already showed you the definition of what stationary means. Already debunked your geppo argument quite resoundingly. Jyubra had more space to manuever because of a bigger room and his opponent had zero range in attack so he capitalize on geppo because jyubras own ranged techniques sucked lol..
Your argument about Zolo being ranged fails because
1.) Majority of Zolos attacks were close range
2.) Majority of Luffys attacks were long range yet Lucci continued using Geppo to maneuver
Had nothing to do with Zolos range or smthing like that lolol it has to do with Kakus range and how his Hybrid form slows him down.
Geppo had zero affect because he couldnt out maneuver someone who had range
Then increased his legs and arms thus increasing his effectiveness in close quarters combat as well as actually close quarters attacking range
Again think about how tall people fight vs how short people fight. Talls keep distance but are vulnerable up close and usually slower. Shorts are outranged but better at close range and usually faster.
So in your head zoro out maneuvers base kaku who was spamming geppo
However the moment he went Hybrid he was able to parry and block zoro shishi soson with one storm leg
Geppo adds power to attacks just like a speeding car has more power behind it then a slow car. Kaku would have further increased the power of his mid-range sword and leg pressure but didnt and stayed on the ground not using Soru or Geppo.
(this was before he even increased his speed by increasing his legs and arms or using swords in hybrid).
And setup zoro by making zoro think that his kneck was a weakness only to retract it and then fire it at high-speed?
And against later used his own speed to outmaneuver the same zoro who was doing fine against his base forms speed.
Kaku faring better against Zolo in his Hybrid is due to his Hybrid simply being way stronger. The extra speed in Base form was a worthy tradeoff for the extra power in Hybrid.
Yet in your mind you are trying to convey Kaku got slower (already debunked) and that his lanky legs stopped him from using geppo effectively (also already debunked)?
Kaku exchanged speed for power.
Simple as that.
As you said Geppou and Soru were ineffective thus Kaku was willing to trade those moves in exchange for greater Rankyaku and neck strength etc.