Sometimes I feel I am also because I do a lot of work for others, I do like that she uses an industrial grade heat gun and a large iron..same tools I use. I would probably not be slamming the wing around on the table without a pad though.
Having pre-cut and trimmed covering would be pretty sweet!
That should be required watching for anyone trying to learn wing covering. I wonder why she used a brush on one of the edges?? Some kind of glue applied or was she just making sure there was no dust??
I used it once in my life on half a wing and never used it again and never had problems of covering coming loose. Just my experience though, I never felt it was needed. Some people use it to add stripes, etc. I feel the most important thing with covering is learning temp ranges and how different temps effect the covering.