13 cardboard boxes - single handed!

You can just about make out the trolley that he is pushing these immensely awkward cardboard towards our shed. He was so chuffed to be pushing 13 at the dame time. I rescued them from the skip after the chairs at church had been unpacked, so they are BIG boxes.
I am entertaining fantasies of sliding down some local steep grassy slope nearby while they are rather rain slick.
It should work but might not do the grass had much good.