Krav does deal with every attack you could think of, but a rape seminar is going to be very specific on things. It is designed for woman and will have valuable information. Since you have taken Krav, the seminar might not be as informative, but I'm sure you will get something out of it. Every little bit helps, let me know what you learn and how it goes. I have taught a few "Woman's self defense seminars" in the past and I'm curious.
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If your in a "Fair Fight", your tactics suck.