a waterskier wearing a red life jacket is holding the line waiting to be pulled up in the water .
There is a better than even chance that a person in a life jacket is waving at a boat in front of them .
There is a better than even chance that a person in a life jacket is waving at a boat in front of them .
There is almost no chance that a person in a life jacket is waving at a boat in front of them .
A person in a life jacket is waving at a boat in front of them .