[@jynmi88]
Okay no here's the thing like, when you rear your arm back to throw a punch, if you come into contact with a solid surface it doesn't serve as a base from where your limb can be grounded and generate more power. That is, again, more of a thing you do with your feet. It just collapses your proper posture and alignment and restricts proper motion. It's another reason why being caught in the corner of a ring or against the cage in MMA is a terrible thing, you can't even get proper power out of that position. That'd just be this extremely janky thing where he rears back and suddenly he forces his elbow to meet resistance and then be propelled forward awkwardly.

Seriously man, OP's already done the work for you, using Geppo for power generation is as simple and practical as "you can explosively propel the entirety of your iron mass body at people from most any position".