Wiki (rip) defines a Rip Current as moving much faster than humans can swim. The best advice:
A swimmer caught in a rip current should not attempt to swim back to shore directly against the rip. This risks exhaustion and drowning. A rip does not pull a swimmer under water; it carries the swimmer away from the shore in a narrow channel of water. The rip is like a treadmill which the swimmer needs to step off. The swimmer should remain calm and swim parallel to the shore until he or she is outside of the current. Then, locations to aim for are places where waves are breaking. In these areas, floating objects are generally transported towards the shore.
Hm…that means that if