So, rather than just - Don't jumpstart a motorhome- would there be any benefit in disconnecting the hab' battery (and maybe pulling a fuse or three) before the process to place?..
If there would be, then maybe there's some merit to installing hefty switches in the system?..something that would isolate the base vehicle from the caravan plonked on top?
..or is that just overly simplistic?
(obviously, the above may not avoid the risk of damage to the "jump-er's" vehicle?...)
If you find yourself stuck miles away from home with a flat battery,with commitments to get back for,maybe a ferry to catch etc, then rightly or wrongly, you'd need some degree of resolve to turn down a jumpstart... 8-)