I recall lots of bodies being found on LI when I was a kid. People would wander off from nursing homes, hospitals and die of exposure most of the time if they were old and frail. There were searches that often turned up nothing.. for a while. Places like Manorville, Wading River and anywhere near the Pine Barrens are good spots. Head west towards Brooklyn on the Belt Parkway, I dare anyone to start looking for bodies.
Something drove the LISK to drop bodies off the Ocean Parkway. Close to home, familiarity with the area? It is quite a risk to drive around with a body in the car for any distance, just ask Joel Rifkin.