@Mountain Kat: My bad, Mountain Kat, the bone thing was for Truthspider, but you had the quote in it and I got messed up. Sorry!
The Manorville bodies ... hummm ... to drive around body parts and stage the torso isn't really consistent with low level gang activity.
@Seaslug: But then a cleaning crew of wannabes would have just put some weight on the bodies and sank them in the sea. A clean-up would indicate a wish to get them hidden, out of sight. Just dropping bodies means rather to get rid of the bodies without caring too much. And the whole scenario leaves me still with the question how would the victimology fit?
Wannabe in this case = someone pretending to be high ranking mobster while being in fact just an errant-boy for the dirty jobs.
I like that article about dumping grounds, even it is a little simplified. If for example an SK raised and living in NY wants to get rid of a body, he first has to know about Pelham Park to come to the idea to drop the body there. And if he did a little internet research, he would find out, people did so in the younger past, which would make him think, isn't that area patrolled nowadays? So dumping grounds in high populated areas have, as far as it comes to SK, some kind of popularity waves. LI had no bigger body finds since Riffkin (LISK1 or the original LISK), while Pelham Park had some nasty finds till the early 2000s.
The other article you found at Angelfire remembers me to the Highway of Tears in Canada, only that one has a lot more bodies. Once more, I would like to point out, that bodies found in one area are not sufficient prove that they are dropped by the same killer or crew. There seems also to be some kind of mutual attraction especially for SKs to each other. And don't interpret "attraction" as thoroughly positive feeling in this case.
@Pinkhammer: ... know how to make people disappear. Only they are a lot more professional than what we saw at Gilgo Beach. If they make one disappear, we can be pretty sure, the bodies will not pop up in the open nature.
@Reannan: Staging of body parts is a statememt. Normally, but not exclusively, in the way of "Look at me, I can do this, fear me". Nice anecdote on the site, London Torso II. who was at the same time busy in London as Jack the Ripper, but lacked obviously Jack's talent in letter writing, tried to come back on page one by staging one torso at the construction site of New Scotland Yard and also, by throwing a package with a cut of arm in Mary Shelley's front yard. Shelley, the author of Frankenstein, was in real life a rather shy, but at the time pretty popular person. Most real torso killers have some need for attention. They don't want those bodies just gone without a trace, they want to use them for getting attention.
I just don't want to miss a point you were trying to make if you did mean to address that to me, know what I mean?