The only adhesive I remember seeing on the hoods of both of the '69 Darts I've owned were intermittent strips around the perimeter of the cutouts on the underside bracing gluing down the top skin.
Supposedly an original hood. I only see seamsealer along the front, 6 spots. (Pics).
Can't remember if there's any under the insulation. (finally able to keep that from falling down, really don't want to remove it to check at this point).
Joe