FWIW, I use WAZE in the car running on my cell phone. It warns of police and heavy traffic based on so many other WAZE users on the same highway. I expect it may not be long before boats are shown on other boat's chartplotters as Navionics users.
I expect they will add a symbal to, "make my vessel show as an AIS target on other plotters". All the data is being tracked anyway. Think I'll buy a tablet for the pedestal before buying AIS. Chuck S