The "Low boom" is the camera angle. It jumped out at me the first time I saw the video. If you look at the boom connection at the mast sleeve, it's not that low. About where Greg Glazier runs his boom using the same sail. I'm 5'8 and the Boom is at the top of my shoulders for reference.
I made the camera mount that mounts in the center foot strap hole position. I machined the base. The "pole" is an old boom cut down with a vertical carbon strut where the camera is mounted. Even in gopro superview, it's chopping off my head though. Need to extend it back a bit.