So, let's say you were an asteroid belt miner, and you specialized in dragging big (but let's say not moon sized, say, 1/4 the size of a star destroyer to give a ballpark idea) rocks back to a mining station for turning into credits.
What ship would be your ideal? Assuming you could modify it as you liked? And what kind of mods would you make to it?
Only caveat is that the asteroid MUST be towed or pushed, it can't be carried internally.