The frog's position is that a face down position. Both hands must be pushed forward simultaneously. The elbow under the surface. With a kick to the back with the feet. Assume a posture that is not the slowest.
The swimming pool is a port on the dock face hands both sides want phung forward simultaneously. Best elbow below the surface of the water with a kick to the back foot by a swimming posture is considered as the most slowly.
The frog is a position that I am face down with both hands to bulge forward simultaneously with the elbow below the surface, kicking his feet back, holding a position in which it is the slowest.