Good question about how the ping was determined! As I have found that just using the Bola machine only in the nets, the slightly higher middled bats tend to respond better then bats with a lower middle due to the bouncier surface. So testing the mallet and throw downs and normal balls is a good call!
Here is further video evidence from the testing. Please note the protective headgear in use during this session:http://www.youtube.com/watch?v=EOc93IRv_lU
After watching these videos all i can think is i would back myself to get you all out bar the stig!
Haha fair enough!