I think ONLY single seat F117s existed. In the jets I mentioned, multiple seats but only one set of controls. If, as a student, you screw the pooch in a single seat jet, you only hurt yourself. In the multi-seat, single-controls jets, everyone in the jet gets to enjoy your steep learning curve.

Worst IP flights in the right seat of the Prowler were night formation. Student's first night join ups (no NVDs), you're along for the ride and can only coach / scream.