Back to WEARING the pack on the lift. That's the issue, right? Off the back, in the lap. Or next to you.
I am sure that the business conversations are all based on "how much are we at risk, and how do we mitigate that risk?" One way to be protected is obviously to be insured. If your insurer makes a change to only cover you for certain exposure if you make changes, and implement "rules" you pretty much are stuck making them. Yes, you need signage, and you need to train your lift ops staff. No packs on the back on the lift. Unless it's a TBar or a Poma.
I think turning the semi-blind eye, by NOT prohibiting wearing the backpacks, while having had awareness of the risks, is just not going to happen. Too much risk. No chance.
It seems like such a clear and simple solution. Maybe because I have never worn a pack on a lift, in many decades. Skied with one...yes, I carried a big one some days as a coach, for decades.
No doubt the surge in AT and BC, along with the invention of the Camelback has more people skiing with packs.
Sounds like there is a lot of conversation about both.....