For anyone unfamiliar with this case the above image is an aerial view of the body disposal site located behind the Golden Key Motel. This particular image was published by the NY Times on Nov 23rd, 2006, three days after the discovery of the bodies.
At first glance the most prominent landmarks are the white squares that mark the locations of where the four bodies were found. Given that this photo was taken three days after the discovery I have to believe that it is an accurate representation of the topography of the site.
That being said, I couldn't help but notice that between the uppermost marker on the top left and the marker immediate below it there is a dirt access road from the abandoned lot on the BLP that leads directly onto the service road that runs parallel to the drainage ditch.
This dirt path would give the killer direct access by car to the service road which I suspect he used on at least four separate occasions.
I've always held the belief that the four bodies were transported to that drainage ditch by vehicle and that dirt access road only reinforces my belief. I don't believe that the Golden Key played any part in the killings, other than to serve as cover from the BHP for the disposal of the last victim.
The killer had to know that at a certain point the bodies were going to be discovered. Once they were discovered the immediate attention of law enforcement would be focused squarely on that area. Which it was.
Most serial killers are smart enough to use body disposal sites that will deflect attention away from where their primary activities occur. I don't think that this killer is any exception. Afterall, he has eluded capture for over ten years now.
Just my opinion.