When i was young i trained in all manner of high and spinning kicks and scoffed at anything less. It seemed that if they weren’t kicking high, it was because they couldn’t . While a kick to the head is impressive, it could kill your assailant and land you in jail. A high kick can be captured making retreat difficult. The terrain in which you are training/fighting can also effect your choices of what types of kicks you will employ. i read a translation of a first person account of a sword duel and how the gravel restricted ones movement . Now years later i grow to appreciate the kicking methods of Taijiquan. One major distinction from my vantage point is that Taijiquan does not kick without first controlling a limb . The kicks are usually low and are of toe and heel varieties . When i point the toe, my wrist is straight. When i kick with my heel, i seat my palm. The elbow and knee must be on the same line or you will be unstable. This particular example is from William CC Chen’s 60 Movement Form. When applying the Separate and Kick, i love the use of the sweeping to kicking foot . This action allows me to defend from the shoulder to the toe and can also open up an attacker to a nasty groin kick . When i asked BP Chan for the best method for kicking testicles, Mr. Chan said ” no no no, you have the wrong idea, you must crush the Pubic Bone ” !!! Yikes !!! Either kick is loosely applied and with a pressing down of the root foot . You must make a connection between the two feet that roots out your opponent’s resistant force and swing from the hip more than the knee. It is important that one must not lean back when kicking as they can be pushed over in a hasty defensive action . If your leg is caught and lifted, you must first follow their lifting force but before your thigh is past the horizontal, turn and step down on it and you will have applied Peng , Lu , Ahn or also Rise/Drill/Fall/Overturn to take your opponent out.