Exhaust noise is very low, both at idle and at speed, but the boat did have some propeller noise, as you might expect when pushing big, overpitched props.
Even though it wasn't really fair to do so, we backed the 72 as if she really was that 40-foot sportfisherman, and the boat's agility surprised us. She backed well - and fast - in all directions. If help was needed to make a sharp turn in reverse, a simple push from the forward thruster was sufficient. When we put a swell over the transom, we appreciated the positive buoyancy created by the somewhat high cockpit deck, though we did have to open the cockpit door to help the scuppers handle the flood.