Have you tried the woman's C-Spot? The Clitoris is EXTREMELY sensitive & provides her with powerful wall shaking ogasms. This is the female equivalent to the Penis Glans. Any other "spots" are simply subsets of the Clit and less effective.
It is widely reported than many men have no clue about the Clit, or how to give their woman a clitoral ogasm. Even worse, women tend to keep this fact a secret from their boyfriends. They have an attitude, "Here is my pussy, YOU figure out what to do with it." Then they complain to their girlfriends that men are bad lovers!