MOST of the time, slow and steady will still get you back to the garage on your own power. The hammer down method can make you end up miles from pavement with your jeep in a heap. On some of these trails, each rig has a hard enough time getting up the obstical. How would you expect tow a broke vehicle up that if the hammer down method rips the vehicle apart.
I usually go with low and slow....with only a little bit of goosing it here and there as needed.