Aside from the theatrical aspects of high kicks they can be somewhat risky to attempt in a combative situation (unless you're good at "setting them up"). With that in mind, traditional JKD uses a number of low line strikes to either destabilize, mobilize, or root the attackers base (feet or legs). This allows the defender to bridge through high line barriers, low line barriers, or set up grappling takedowns. The following video by Sifu Rick Faye shows how some the low line strikes can be used when high line barriers are in place.
