The second crime scene may be plausible, but it really doesn't make much sense. The most popular theory of 2nd location is the crime taking place in the Mears outbuilding. If that is true, then why move the bodies at all? It makes zero sense to move the bodies and endanger yourself being caught when the whole town is on high alert looking for them or suspicious activity. If it was just to be found, they would have inevitably been found in that small barn. What indication is there that this crime took time? It could have been over 10 minutes after the audio was recorded. Is there any evidence that disputes this?
Framing RL makes as much sense as any other explanation for them coming all the way back to dump the bodies, although still not worth the risk. It would be extremely brazen or plain stupid to move bodies less than a mile just to implicate an old man with no violent history. According to RLs wife, the police have time stamped video of RL in other places during the time that the crime occurred. I highly doubt she would defend him so robustly and publicly if this weren't the case. RL for me is 100% not involved in the criminal act, thought it may be possible that he knows something, but that's it. I would happily admit I was wrong if it meant LE had the evidence to charge him and ultimately solve this, I just don't see it.
Occam's Razor for me. I strongly believe the sight of the crime happened very near to where they were found. I also believe it was a single person mostly acting on opportunity. I would be interested to know if anyone has any statistic on how often more than one person (versus one perpetrator) commit a murder on a minor. I would be surprised if a single perpetrator wasn't the overwhelming majority of cases. MO and not looking at facts, but you would need numerous very sick people.
Many people are thinking of every motive under the sun that this could happen, but the fact of the matter is there aren't many things those girls could have done/seen/heard to warrant MURDERING them. For me, the motive is one psychopath/sociopath plus two beautiful and innocent girls and a small window of opportunity. No drugs or pregnancy or abuse and certainly no occult conspiracy. Again MOO, but I believe that the perpetrator was calm, calculating, and thorough, and may have done it before.