BSAC encourages the use of a long hose on the octopus. That's never been up for debate.
It's hoglooping that is/was contentious.
Currently not allowed in training (unless you're one of the sekrit squirrels piloting the new courses), but allowed in normal diving if you've been trained by some bugger else.
As for bungeeing a longhose to your back-mounted (pony?) cylinders... it's just bloody stupid - how are you going to re-stow it when it comes undone? In fact how do you know it's come undone -- when you can't fin forwards 'cos it's caught on the wreck?
Personally, I don't bungee. I stow it in my bcd.
To be honest I do wish the BSAC PTB would include 'proper' long hose use in the training. Once trained it could then be an option to use one.
Mainly to sort out how it should be stowed (if and when bungied to cylinders - much simpler on RIBS) and re-stowed. Also how the donor maintains control of an 'out-of-gas' situation with buddy. That is the one thing that really concerns me with many (club) divers using long hoses - told it's a 'good thing' but really so many haven't a clue.
That dubious interpretation made by many in the early days of 'technical diving' made me go and get a proper understanding of the subject. Finally convinced when diving with a diver from another club who made a similar training exploration some years earlier - no showing off, just put her kit on the boat, when kitting up sorted her hoses out in 2 quick moves; no snagging, no knots and close to her body under control.
I wouldn't want to number the times I've had sort out stowage and usage issues of long hoses when diving 'cause divers have been trained by instructors who have made their own interpretation of the subject.
An idiot with a twinset is every bit of an idiot with a pony, just that a pony being cheaper tends to be the first choice of redundancy for many
which means it has a larger slice of inexperienced divers. A lot of that is down to peers who should know better that would happily say
go do a twinset, fundies, ADP courses etc. if thinking twins, but would say just "slap it on" when it comes to a pony.
Not really surprising then that it gets a bad rap when it's the blind leading the blind
ANY cylinder of gas regardless of size or number needs good protocols to ensure it's used as intended.
We don't blame a twinset for a CF of a rig, so why blame the pony for the same? Blame the diver, the pony is innocent
Which I think is the whole point of people not liking bungee/bcd/any other way not proven at point of dive.