After he had confessed to more than 40 women he later confessed to having killed 60 women which led to unsolved murder cases. Obviously one of his morals was that what he killed was all his. He did not want anyone to have the bodies nor did he want the police to know about this woman that he felt were his prizes. Ridgway wants them for himself that is why he buried them instead of throwing them in the Green River like his first couple of victims.
To profile a psychopath is difficult due to them believing in their own morals(Inside). You would need to know what they are thinking and really get to know them but be such a serious case there is no time. One FBI Investigator almost ended his own life due to the Green River Killer. As you are trying to profile the crime it becomes very stressful because you are trying to walk in their shoes so you can figure out what they will do next and what they did already. You do this so you can feel the emotions they did along with the feelings he felt throughout it. Doing this is very