How To Film Baseball With An iPhone From Behind The Cage

In just a few weeks, my 8-year-old has upgraded from Little League to Travel League. I am taking up the challenge of filming some real ball games also, upgrading my gears as well. This time right behind the cage, instead of sticking a mono-pod into one of the metal tubes along the dugout fences.
To make the whole system shock-proof (not sure it’s Major League shock-proof), I iterated a couple of different setups until I settled on this one, pictured above, that I really love. (Shown below is a sample clip from a 105-min whole-game video starring my boy’s single, base stealing and run.)