Alan Ratcliffe wrote
I glue strips of wood veneer on the bottom with superglue. Glue it on and cut off the excess with a blade. Quick, easy and sounds good. I've also used strips of thick paper (businesscards work well) and superglue in a pinch.
Ok so its a normal thing to do.
the previous owner of this guitar really did a number on it. I am really keen to get it clean and strung up to play.