If the 3 grow operations were as large scale as LE are saying, there had to be PEOPLE working to harvest and package the pot for distribution to a MAJOR BUYER, who would buy in bulk, guaranteed.
Extended family members would surely be employed during harvest time, so maybe LM is correct that LE is still looking closely at his family. I don't believe for a minute that BJM was there to "feed the dogs" every morning.
I would venture to guess it took about 5 WEEKS prior to the murders to harvest and package and replant a huge harvest, coincidentally, the same time BrR was staying with FR and HG.
Perhaps some of the vehicles were left behind by workers (who didn't show up at CR's after the murders).
Or, they were vehicles being "fitted" with compartments to transport to "CAR AUCTION' (wink wink).
Maybe the 'workers' stayed at the campgrounds across from KR place and were shuttled in dual cab trucks (like the red on we saw being towed) to work at CR's every day during harvest time.
Maybe DS, GR and KR were all involved in packaging, transport, and production for the big harvest that came in during the month prior to the killings.
Sounds like someone got double-crossed or cut out of the family business and took revenge on everyone close to CR.