How effective is aikido in self defense?
one time i saw this club bouncer break the arm (kote gaeshi) of a drunk who took a swing at him. the bouncer has aikido background.
way back in school some dudes were fooling around till it got heated up pushin,yelling. the mma guy dove at the aikido guy- down, mounted him and beat him up.
there are some on youtube, but can't figure if they're for real.
So the answer is, its only as effective as you are.