Looking for the best way to hang rock on 48" OC trusses. Is hat chan the best & simplest way to do so? * no sound barrier needed. OR - will 2x4's laid flat sag at 48" span? 1/2" or 5/8" DW ?? IF Hat Chan is the best way to go, what gauge to use? and what is the best way to secure to 2x6 wood trusses?