I wonder if they can wear space suits, and cut a hole in the side to make a manual thruster control stick
I should not be too much harder then steering a motor boat
I never imagine that alot of people will go up there unless you have a manual control solution. Its so many layers of things that can go wrong.
I don't think modern astronauts even undergo "test pilot" training to understand the maneuvering dynamics of the ship.
Fly-by-wire means that pilots nowadays are completely disconnected from the control surfaces (or in the case of space ships, thrusters).
Such vehicle dynamics training was commonplace during the 1960s-70s space programs. Not any more me thinks.
Incidentally, a motor boat is a bad comparison, due to the friction of water greatly assisting in vehicle stability. A closer analogy is attempting to maneuver your vehicle in free-fall (e.g. the scene from Blues Brothers required several takes to drop the Nazi vehicle in a stable position without tumbling).
The biggest difficulty with manual control of multiple thrusters, is ensuring the vectors correctly add up, the vector goes through the center of mass, and doesn't send the vehicle in a spin!
Apollo 13 also comes to mind, where the astronauts had to learn the vehicle dynamics of the combined LM,CM & SM, being pushed by the LM descent motor.