Pair. I do this. I drive, with my machine, on my setup that I'm comfortable with. They navigate, and tell me what to do. This gives me a pretty deep insight

Pair. I do this. I drive, with my machine, on my setup that I'm comfortable with. They navigate, and tell me what to do. This gives me a pretty deep insight into how they approach a problem, but also how they interact with others. There's no adversarial element, and it gives them the chance to see me screw up to give them the mental space not to sorry about stupid errors. The one worry I have about this is that it's more vulnerable to my own biases than a more disinterested process would be, but if I'm consciously aware of how that can play out, I'm in a better place to counter them.