I don't have any tips really as dad makes it, but we have this quite often now. Its probably our most favoured 'roast dinner'. Stick some celery and whole carrots in, garlic etc.
I think there is a certain method to still get your crackling, hard and crispy on the outside and soft and juicy underneath. Not sure what though
Do your normal other bits. serve up with some really tasty apple sauce...
and its great the next day in a baguette or something.
Sorry for not being any help but it just tastes really nice. I think we generally go by jamie oliver recipe, but last time i think we done the hairy bikers and that worked out just as nice.