We used a SJCam SJ4000 velcroed and tie wrapped to the end of a window washing pole from Home Depot. The base of the pole, with the handle removed, fits exactly in a Sch. 40 PVC pipe, that we attached to the operator console with a threaded fitting attached to a cast iron flanged base. It's a three section pole and I think it has a total reach of 9', which is plenty to get the camera to the maximum height. There's 8" of PVC pipe.
An 8' Micro HDMI to HDMI cable runs from the camera to a 23" display.
Here's a good photo of the lower part of the pole unit:
https://onedrive.live.com/redir?resi...nt=photo%2cjpg