Same here. I’m not a ship guy and have very minimal experience with a single screw, but starting out way back when on small boats, in particular little twin screw crew boats (less than 60 ft), they were so over powered that I was trained to center the rudder and twin screw to walk whichever way i wanted to go.
Once I ‘graduated’ to larger crewboats, under powered utility boats, mini osvs-without a bow thruster, that logic wasn’t practical…as much. Just centering the rudders and splitting the engines to crab/walk wasn’t going to accomplish anything efficiently. That’s when I really started understanding the use of the rudders.