Choose a move and lets see what the uses are. Lets start with the double hooking block and single punch combination in Yul Gok. The below presumes an opponent facing you and punching at you with a right hand. Blocking with the first and then the second hook blocking a second punch, thus opening the side of their body rear, to your front punch. or The first hook blocks a front punch, the second hook catches the opponents fore head and pulling thier body or the head towards your front punch to strike the head or etc. The below presumes an opponent facing you and punching at you with a left hand. The first Hook is a block and the second is a block leading to a pull onto your front punch. or The first hook is to block and hold then the second hook grasps the side of the head or neck of the oponent in front of you with a punch to the Ear, jaw or mid section. The below presumes two opponents facing you the one to the right punching at you with a right hand, the one to the left uses a reverse turning kick,side kick or hooking kick with thier left leg Two person attack, the first person to the right been blocked you immediatly, hook the other persons leg and pull them of balance causing injury to thier knee, muscle or otherwise disorientating them for the split second that you punch the other 1st person in the side of thier body or head. There are many uses for all techniques.