Any of the harvesting abilities work as a ranged bow pull spell, because all it does is check if the ability is ready, targets a mob in the default range and within LOS, and then your other settings do the rest. If it's not working for you, it is because something you have set up is not correct, probably in the auto hunt tab, or the settings tab (ignore mob HP 100%, ranged attack, etc)
And no, there is no option to just pull with a bow.