What are some ways that I can repair this area. It feels really weak not solid like the rest of the board and there is a tear.

try a diy fiberglass repair kit

I agree fibreglass kit, and I would also try and get some of similar thickness and texture foam, all from hardware store

May as well do the best job you can while its out !

(The speaker arch in the rear was one tricky bit for me anyway)

Superglue can be used to glue the layers of fiberglass back together