I did my roof last fall with carbon fiber vinyl.
It is also good to have help pulling and stretching the vinyl. I don't thing the hair drier is gonne get hot enough either. Just hold the heat gun farther away and keep the heat moving so you don't over heat one spot.
We started in the middle of the roof and using the squeegy worked in a circle until the edges started curling up. That's when we started using the heat. Just heat a small spot at a time and stretch as you go. I would suggest having clean leather gloves on since your hands will be right next to the heat.
We didn't use and soap and water, if we noticed any air bubbles, we just lifted the vinyl back up and squeezed them out.
As your pulling the vinyl, keep you fingers spread apart so you don't over stretch and leave a thumb mark. Not a big prob if you using a solid color but anything with a pattern will show.
The trickiest part of stretching was the corner where the windshield and A piller meet. It's just hard to get in there. take your time.
Once everything was stuck to the roof, we trimmed the vinyl 1/8" long and tucked all of the edges under the window rubber and door moldings. NO EXPOSED EDGES.
