You know I got a bunch of accelerometers at work we use for earthquake NEBs specs. I keep meaning to do this test with them. Which I am sure if the same test Sims did. Not very expensive, Just tape em on, and you have to have some analysis software to bring out the FFT.

I might try to rig up something in the next few weeks. Bowjax have a lot of mass, so I can see how they would be more effective in the first video.