i'm sure you already have all of the research skills to learn how to fiberglass a small repair.
The gorilla glue is certainly good enough to repair the core
and possibly good enough to bond the top skin to the core.
But the top skin that was once one piece is now 3 pieces.
the gorilla glue cant fix that.
because the glass or glass/formica in the top skin used to be 10x as strong as the glue. (not any more
what you've got will possibly last for a bit.
you did ride it for 45 mins broken.
but since you were able to break it the first time, the odds are against you getting much further without a good repair.
read that stuff.
send us a pic/description of the busted area.
and we can come up with a short shopping list of repair supplies.
most any surf shop would probably get it back together in 1-2 hours time.
once you get a handle on whats involved, you can decide how much you want to get involved.