You're asking for trouble from
both the rear trunk
and the roof flying off if you tow backwards. They weren't really meant to hold against 70 MPH "breezes" for very long.
If you're towing forward, you're only risking a single failure (front trunk). Not only is that opening designed to cope with 70+ MPH "apparent wind speed", but there are two catches on it. A couple of straps or bungee cords or suchlike can eliminate that worry alltogether, but you do have to worry about them damaging your paint.
Tow it forward.
--DD
------------------
Pelican Parts 914 Tech Support
A few pics of my car:
http://www.pelicanparts.com/gallery/Dave_Darling