Used to be able to. That kind of shit does a number on your back and knees. Still could out ruck most normies.
But I have no need. Bug in, invite some relatives and friends (preferably ones with skill, and yes I am prepping towards that), coordinate with the neighbors. Control choke points. Priorities of work.
Neighbors also have big equipment; farmers plus three of them that do pond construction/repair type stuff. Three big excavators (and a slew of little ones), bulldozers, track loaders, skidloaders etc. Defensive structures are easy peasy as long as they aren’t EMP fried and until the diesel supply goes red. One was also a prior Ranger Regiment bubba.