i wasn't in at the preperation, but found it easier carving on the bits of crackling that hat been finely scored thru, as they lifted easily, bigger bits were in danger of falling off into the fire.
we had braziers on both sides i thought it would have been good idea to have a removable dish or something to catch the drips and any drops though.
i took the crackling off when ready then carved in long slices, but u have to be carefull incase some of the deeper layers arn't fully cooked, i just kept turning it like a big kebab.
good luck and mind and have a bite yourself.
mandy