SM’s brothers upcoming search efforts are commendable. IMO, this is where poor families of the missing will most likely feel another level of disappointment, frustration and desperation.
IMO, LE will not support this search effort. Therefore, the skill set truly needed will kindly get turned down because LE did not call them up directly. Folks that are on SAR teams will most likely not go rogue and risk their position with their organization for a private search. They will also not be covered if they get injured.
Anyone who would charge you for their service, IMO, is questionable. Unless of course we are talking about air support (helicopter), that will cost you, as an example.
Then you are kind of left with a bunch of folks with good intentions but are not a good choice for a search in that kind of terrain. Let’s say you get 300-500 volunteers, that’s a large number to keep track of safety wise, then you worry that everyone knows areas they can and cannot go (trespassing). This search will most likely not sit well with LE. It will be interesting to see how this unfolds and of course I wish them all safety and the resolution they are hoping for. Just my opinion.