I watched a single marshaller reverse a 737 out of a gate at YMSY and then drive it forward to the edge of the apron using a long headset lead for communications to the aircraft with the single tug under the port main wheels operated by remote control by this single marshaller. Both engines were started whilst being maneuvered on the tug.
This leaves the issue of traction. Out of interest how much weight is supported by the nose gear of jet (say a 737 or A320 or a heavy such as a 747) under static conditions on the ground? It is this weight that will determine the amount of traction available.
W