Well, auto blitz beat happens with bow's "ctrl+click" were always together ^^(LUK stat investing for falcon chances %, INT stat for the blitz beat damages)
Falcon assault is different case, because it can spams without a bow :P
Since the blitz beat current support damages were unsatisfied(even with 2 INT gaunt=3k damages max inflicted), that's why I'm suggesting to boost it for the bows.
Thanks, GM ares ^^