In my Federation deck I stacked it with 6 ships. My friends who have been playing Klingon and others also do the same. Even then, we often end up sitting around our Outpost waiting for either a ship to come up or a card that allows a download.
The two Borg decks I saw had 1 ship in the draw deck each! I've looked over their cards, and perhaps I'm missing something, but I couldn't find any cards that allow a ship download and have no idea how they are guaranteeing they don't have a cadre of drones twiddling their thumbs at their Outpost for numerous turns.
Also, please note: I am currently only playing physical cards, so I would be drawing from The Borg, Voyager, or First Contact sets.
That said, does anyone have an idea how to guarantee Borg ships more easily?