Jump from HBP PE16 - HBP PE17 is HUGE.
It seems the difference is that a freestanding HeSPU requires mid-trap stabilization.
I can do 5 * 5 HeSPU facing the wall with hands elevated on 2 panels, but a freestanding one is beyond my reach.
I think at the beginning of my movement there is a slight push back into the wall until my arms get extended enough to pull my torso vertical at the top.
Are there any supplemental approaches to develop the needed mid-trap strength to do this?