I feel like the workers can tend to dawdle so hulling things can be very painstakingly slow even if they have been set to hull only, to combat this have had an idea.
Carts with and or with out a pull animal, this would allow Hearthlings to transport more resources and do it much quicker. You could also make it a specialised trait. Also having Hearthlings on horse back will also lead to new units like the knight
not my images (google images)