I've had the MCU-002 installed for almost a year now. My twin TZT12F units are behind the console glass on my SeaVee. Honestly about the only thing I use the MCU-002 remote for is to zoom in/out and center the chart on my screen showing the chart and navigation info. while running. It's just so much easier to use the touchscreen when fishing or at rest that the remote doesn't get much use.
As always, YMMV.