Perforated headliners

I dont have a preference but its a ***** to get right. Heard a lot of procedures but the one I think works best is to get the thing centered, then pull the center out to the teeth over the doors and then work your way forward. The corners are the most important. Almost a 2 person job: one inside to make sure the thing is centered and one outside pulling on the headliner and hooking the teeth. Make sure you put a deadener/insulator on the ceiling prior to the headliner. Jute, Dyno-mat or that silver double sided 1/4" insulation they sell by the roll at a hardware store. The sail panels are hard to get wrinkle free, I think a blow dryer or low heat gun helps tighten things up, but test on a scrap piece to see if heat shrinks the material or makes it droop. I used a non perforated one and the creases out of the bag haunted me for months. They finally started to fade. Ill never try it again.