I was considering using jump rope as an aerobic/locomotion type training. (I am also rucking, and will build up to running again over the next couple of months). Primarily I am using it for the sport specific advantages that it develops with regards to martial arts (light feet, agility), but also on a few recommendations by others to use as a stepping stone to return to running and as an adjunct to it. I ran a couple of fairly short tests using my heart-rate monitor over the last week looking to see just how aerobic I could keep it before running into my MAF threshold. I did a couple of 20 minute tests, jumping rope at a relaxed speed, and then actively resting shortly before I hit my MAF threshold (152bpm), I would then let my HR drop down to around 125bpm whilst actively resting with drills like fast and loose, or standing cross crawls and other OS drills. It didn't take too long (maybe a minute or so) for me to pop up to 152bpm, but then recovery was fairly quick. In a 20minute session I did around 10 repeats of jump rope. Hopefully I will see this number reduce as my aerobic base builds up. When I ruck my HR is generally around 120-140bpm depending on terrain. I think it should have a good carry over with A+A snatches (which I have just restarted after a long time in rehab wilderness), but if I'm missing something please let me know.