Hokama Sensei use of the digging toe on the top of the foot as a Force Enhancer

 

Another demonstration of use of the digging toe on the top of the foot as a Force Enhancer. First, we see Hokama Sensei, of Goju Ryu, showing an application for a technique.

Here we see how Hokama Sensei uses the toe digging into the top of a foot as an efficient force enhancer. 

 He also shown kicking into the floor (lightly) as a way to prepare the big toe for that grinding motion strength.