I think they should catch Oumuamua. Send explosive ordinance of sufficient magnitude to appropriate locations. Timed detonation. Cause the elongated asteroid to rotate to a vertical position. Inertial momentum would shift with the displacement causing a net slowdown. The purpose is to send machines to recover the metals from the asteroid as they could be very valuable. Metals that could have very useful applications here on Earth. Meet ‘Oumuamua, the first observed interstellar visitor to our solar system.