“I question how experienced these girls were”
Not as inexperienced as these girls who thought the river ran in a circle: /http://www.mlive.com/news/muskegon/index.ssf/2016/07/muskegon_river_tubing_trip_tur.html
Geez. That group was clueless and they are lucky to be alive.
They probably thought the river was like the circular courses found at water parks.
But then you wonder do some people know what a river is, what a lake is, what a pond is, etc. Or understand that a river is not going to flow in a circle???