Back then, a whole log sled full of wood didn't trouble him. He could walk for hours with it trailing along behind him without noticing. But now he was sure that he wouldn't be able to pull a full one, especially not here, such a distance away from the worn-down trails.
He tested that half-full cart, not even sure if he could pull that. And indeed, as he sat behind the handle, he found it was a significant struggle to get it moving. With his one leg not able to push into the ground as hard as it should, breaking the inertia of the still cart required a considerable effort.
But he did manage.