when i had my bus towed, they didn't use hooks but a 'T' thing instead
that went into some slots on the side of the main beams under the
bus.  No damage.  (flat bed tow truck too)

-M
84
Matthew Pollard             http://www.uidaho.edu/~poll7356
Dept. of Chemistry               http://www.chem.uidaho.edu
University of Idaho                   http://www.uidaho.edu