Tower Speakers for Whole Boat
 

Does anyone use tower speakers only to cover sound for the whole boat?
We do not listen to music while under way and are not really interested in projecting music back to the wakeboarders or folks on the tube (yes I said, "tube") LOL. We like to listen while we are floating to eat lunch or to let the kids swim around. My initial thought was to use tower speakers like two-channel home stereo.
I know coverage would be a challenge, but I'm kind of a less is more kind of person, so I thought I'd see if anyone else has had success.

Any thoughts?