I use armor to balance the ship as much as possible. This can be effective, but for smaller ships, it isn't effective.
For CA an bigger I have 6 inches of main deck armor. This reduces Pitch and Roll. So does Main Belt armor. Fore and aft armor, deck and belt, can counter fore/aft offset.
But, it would be much appreciated if there were some suggestions on how to balance a ship.
AND
I thing some of the hulls of smaller ships can't be balanced.