A couple of reply's here.
If you were talking about the strap on the crane ball, it was what I used to mount the camera. I had a GoPro helmet cam, and it has a quick disconnect, so I could switch from my helmet to the crane ball. Sweet setup.
This was the first video I made, and I just got the camera 2 days before we did the job. I was very fortunate how it turned out! I was mostly guessing on the some of the shots I took.
It did make everything look taller, but I like. It should help with all my tall tales when I am an old Man.
We also had a outstanding crane operator, he could use that crane like a 3rd arm, made everything much smoother.