Inch force is an essential component in Wing Chun. Conventionally it was thought that the wrist movement was the determining factor in the power releasing. What I understand was that after the fist was wrapped up in glove, the extent of destruction as a result of using inch force was tremendously reduced to an insignificant level. Hence there occurs a big question here as to the usefulness of inch force.
Apparently it was wrong to explain inch force as such. I understand that the inch force has to be exerted, again ,from the hip and waist during the turning of the body in the "searching the bridge". Then the destruction of inch force may be increased by folds.