I got a friend's porker into our trailer using pig nuts as a bribe, took a couple of goes, maybe 10-15 minutes in all. He had seen me about a few times but didn't really know me. (The porker, not the friend.)
We kept him (again, porker not friend) in the trailer overnight, in sound and smelling distance of our pigs. He seemed comfortable and happy. Straight off to the abattoir in the morning, no stress whatsoever.