Not sure I agree with the statement about twin engines and no benefit from a stern thruster. I tend to think it depends very heavily on the specific make and model of the boat. My experiences: 340DA - no bow or stern thrusters - never missed them. Neither were needed. 47DB - both bow and stern. Twin engines would move the stern, but stern thruster was a definite benefit. I would NOT want a 47DB without the stern thruster Current boat - both bow and stern. Stern will walk like a big dog with just the transmissions. Use the Stern thruster sparingly - went a few months waiting for parts last spring - did not miss it not working. Guess my point is, hard to make blanket statements about the benefit of thrusters (either bow or stern) without considering the specific boat - and sometimes unique challenges that an owners slip presents.