I am pretty sure they will find human remains out there. I think they should also search the Spahn Ranch again. Tex Watson was the one who put the killing ideas into Manson's warped head- he was a parolee for violent crimes worse than what Charlie had done at the time. The books on the Family skim over Watson because Bugliosi chose to prosecute Manson as the crazier, more likely mastermind of the murder spree. I think Watson is a natural born killer, and Manson was wasted on drugs most of the time. Manson bought into the theory, then claimed it as his own, loved the notoriety even the trials and prison time. He's scarily evil, but Watson is another Ted Bundy.
Also, has anyone stopped to think that with all those girls, drugs and sex, there are probably some of the Family's dead babies killed and buried out there, and maybe some self- aborted fetuses as well? Those people weren't just crazy, they were ruthlessly nuts.