I have a friend who is trying to improve her volleys. She took a lesson on this recently, so today she was showing me this new way she volleys. She started her takeback very high and used a lot of brushing action/high-to-low as she struck the ball, both on FH and BH. The result was a ball with a lot of slice ion it. These balls tended to be fairly short, with underspin/slice. She said she had been told to keep her right arm very straight on her BH volley (no bend in elbow). She usually hit these volleys open stance and did not step toward the net. I wasn't sure what to make of this. These volleys weren't drives; they were more like drop volleys. The technique was very different from what I was taught to do, with forward motion/stepping in/using the legs being very important. The result was very different from what I was taught to attempt, in that I always thought that the volley should have pace and depth as well as underspin. Here's my question: Is there any disadvantage to volleying in this new way? Is this something I should try to learn?