My DP is the Pork King of the Outer East He porks me often And it's goooooood.....

He reckons eight hours sounds about right. Are you using a conventional oven?

Separate the crackle, or cover it with foil once it is done (the meat will keep cooking). Remember, lots of salt and vegetable oil rubbed into the skin and start off with the oven on a very high temp.

Good luck!