Raking shots with the shoe or foot into an attacker's, ankle, shin, instep and toes can be very effective. If you're still on your feet, kicks or stomps to these target areas are simple to use, plus there's little chance of injury to yourself when striking the opponent. In most grabbing/grappling situations, these areas will be found to be vulnerable to attack if you take advantage of the opportunity. Even the most skilled professional fighters sustain several of these strikes before they either begin giving them back or attempting to block these painful attacks.
The groin kick is another "primary" target area. This means that like a knock-out punch to the jaw, a properly delivered groin kick can stop the best fighter dead in his tracks. If your assailant is another woman, a solid groin shot against another female is comparable to a groin strike against a man, so I'm told.
The triangular shape of an open stance opponent, begs for the groin kick. If thrown with the slightest bit of arc to the technique, the leg will reach the target even if your aim is a bit off. A rising groin kick will strike anywhere from the inside of the knee, upwards and the opponent's posture will allow it to slide up to the groin.
As always if permissible, which it is almost anywhere in the USA, we recommend that you carry a proven self defense spray like Mace pepper spray and tear gas. The use of a defense spray when an attack becomes imminent, will afford you the opportunity to run away, or if you must, stay and fight using stomps, groin kicks, knees, elbows and palm strikes while the attacker is at a disadvantage. See you soon!