I've used contact cement on a few boats and never had a problem. You might have to go to a cabinet shop or a countertop shop and buy some solvent base spray grade contact cement. The cans of 3M spray 90 put out to fine of a pattern, you want more of a heavy splatter (20.00 harbour freight cup gun). And you dont have to let it tack up as much as if you were laying formica to a sub straight. Since the carpet breathes, even if you put it down a little to soon it will still dry and it will allow you to make slight adjustments if its wetter. Thats the way my boat was done originally and when I went to redo it 15 years later all I had to do was pull the carpet, hose it out, let it dry and spray new contact. No heavy carpet glue to scrape up.