Originally Posted by BCTennis
Ya you mean those volleys around the service line and half volleys right? Yes I do miss those sometimes but its not a big problem like my forehand return
yes, the service line volley....
so for the return, once you have the solid unit on the 'cardboard', just move your weight forward (by stepping forward with the left foot), and allow this heavy cardboard to collide with the ball, you should produce solid penetrating chip returns every time
in my own experience, I'd say 50% of the power comes from the left foot stepping forward, and the other 50% comes from the right chest muscle contracting.
the arm is passive... it's main job is to maintain the unit as 1 solid piece, and make sure that the cardboard always faces 1 direction (instead of flopping up towards the sky or down towards the ground).