The thread about the trolling motor or boat can be controlled by remote control had me thinking about other Technologies that could change how we boat.
This is a video of a "audio sculpture" it's designed to show how proximity sensors can detect where listeners are and then adjust the audio to suit where people are sitting.
Example: you could have one on the tower facing rear and when it didn't sence people or a rider behind your boat it would automatically turn the tower speakers off!!!!
http://youtu.be/EJqHZXRN77k
It kind of had me thinking. How often do you have people sitting in the bow of your boat the sensor could tell if you had occupants there and turn off the bow speakers, this would or could save or shift the power from your amps to the rest of the system. In an effort to save battery power and improve runtime. You could theoretically program "Modes" (Rider mode) could shift to the tower speakers and fade Down the interior speakers. (Chill Mode) could mute the tower and turn up the interior.
(Beach Mode) could shift the bass or sound to the back or front of the boat depending on where you were partying. I was thinking along the lines of Chevys 4-6-8 mode where it shut down cylinders to save on fuel.