Insulating Walls Aginst Concrete - The RIGHT Way?

With metals stud-walls framed 3 inches against my concrete walls, what are the methods everyone has used to keep the insulation batts from falling down when stuffing in between the studs? I read through Rods' book, and couldn't find the answer. Any suggestions?

Aloha, Some have used a cord or wire webbing to hold the insulation in place until drywall/RC clips, etc are able to assist in the support. Here are a couple of pics that might help. Aloha 8)

Also, you may take a piece of hat track/ metal stud or track(whatever ya got left over) cut to fit in between the studs. Then apply a screw into the cut piece thru the insulation and finally into the top plate. A small wood battten may even be better, less sharp edges and easier to work.