How the fukk is it in this day and age that these boat rental companies don't have GPS trackers that a renter could pin on their shirt so if they get submerged they could simply press a button and a helicopter or rescue boat could be out there in minutes! Anyway in tribute to Naya I'm about to binge these movies..(Waterworld(1995), Head Above Water(1996), Deep Blue See(1999), Open Water(2003), The Shape of Water(2017)..Any other suggestions?