[Loser]

The way random movement works is that a random sector is selected and everything is pulled toward that sector a certain number of sectors.

So, making those random movement systems troublesome in a maximum sense requires that you start the mines with a maximum distance from eachother.

However, sweeping a system such as this is relativly trivial, once some time has passed. Start a few objects out separated form eachother and when they all move together you know which sector to sweep.

The trick is to keep adding mines to the system. If, for example, your home system has this problem, you simply keep producing and launching mines.

And don't worry, your Base Space Yards and Repair Bases will eventually all occupy the same sector, and the ships they build will follow them, so retroseries is still possible. It's just funky!