I would say don't separate unless you have too only makes more work for yourself in the end, I know I wish I wouldnt have separated the two.
But if you need to separate, take your time and don't rush it! I used an scrapper hammer and screw driver to do most of the work. Use scrapper and wedge between decks and work your way around the entire hull youll know your gettin when you hear the pop! Only trouble area is the bulk head, I used the dremel multimaster saw to cut through the glue in this area.