What about the attached as a means of propulsion? It would be a spacecraft with a long magnet in the front. Attached on one side by boons the magnet would have a reflector/deflector or shield of some type e.g. aluminum. In interstellar space there would be charged cosmic particles moving in random directions. Given that charged particles are deflected perpendicularly to their trajectory, and per the right hand rule it would be in a uniform direction. So, would this generate net thrust for the spacecraft? Obviously the benefits would seem to be many... such as not needing to take propellant, being shielded to some extent by radiation, and...hmmm not needing to bring your own energy? momentum would be conserved.