Hooking Block (golcho makgi)
Unlike other methods of blocking, this technique requires a minimum amount of effort on the part of the defender. It also allows the opposite hand or foot an immediate response for counter- attacking. Although a hooking block can be performed with an outer forearm, knifehand or backhand, the palm is most effective.This technique can be used in nearly all stances, though walking stance is commonly used. An inside block can be used but an outside block can best insure blocking of the opponent's free hand. The blocking tool must reach the target in an arc so it can be properly placed on the opponent's back forearm or outer tibia.
Palm: Keep the elbow bent about 25 degrees outward and the wrist slightly inward at the moment of the block. The palm is the best tool for increasing the chances of making a successful grab.