Where is the hull number on my 71 rogers?

[newmex]

I just purchased a 71 rogers jet boat. its my first boat and it just need some tlc. I have every piece of paperwork since she was new. I even have the firat reciept for the original 8 track that is still installed. Where is the hull number? I lookid at the transom 3 times ans couldnt find it. any ideas?
thanks

[TIMINATOR]

Many older boats don't have hull ID#s, if you are in AZ, you bring all of the paperwork that you have to game and fish, and they will assign a a# and give you an info sheet of how and where to put it. TIMINATOR