If you are skillful you may fell your opponent from behind using the pattern "Fierce Tiger Claws Sand"

Some martial artists find kicks formidable, as they are long-reaching and powerful. But actually it is easy to counter kicks -- if you know how. But how do you block powerful kicks? You don’t have to block them. Step back or lean your body back to let the kicks pass, then move in swiftly to fell the opponent, preferably before he has recovered from his kicks.