How I repaired my damaged section of my fiberglass wall

I'm at work now but once home, I will check out the Lance build and comment some more.
It is so long time I don't remember the adhesive. I could try find out later. It is the red stuff in the images. If I remember correctly it is meant for manufacturing application and not available in retail stores. It is sprayed on on both surfaces and let dry then attached together and needs to cure under pressure.