I learned about over and under from an audio boom operator when I was a camera PA on a movie while wrangling 100 ft of BNC coax for the video hose from the camera to the village. And as you all know, coax loves to bird nest if you accidentally release some of it, kind of like a ribbon spring.
It took me a few times to get the hang of it and I've never really used it since then. Currently, for long audio & coax runs (if needed) I use plastic handheld storage reels with a sliding floating inner handle & outer crank handle, found at any retail store, for an easy deployment and recovery method.
For my 300 ft multi-channel audio and 250 ft a/v/com/power snakes, I use metal reels with frames. The snakes are all about an inch thick and even my other 50 and 100 ft unreeled jumper snakes get real heavy when manually looped several times.
And let's not forget about heavy, stiff Triax which is like wrestling an anaconda.
As for most feeds now being wireless, on that movie I mentioned, the only thing wireless was the Steadicam video feed to the village with a consumer FM Rx. I remember sitting in my truck about 100 yds from the set tuning it in on my little 4" Sony Watchman. That was a while back and has probably become digitally encrypted by now.