Did a test descend today (something of a rescue drill, getting into the water before someone drowns, or something like it):
Had the heat-vest set a bit to high and was cooking in my drysuit, just wanted to get down fast.
I let the backmount buddys blocking the platform descend first and followed without mask, fins or tanks (hoses still strapped to them).
Clipped in the tank bottoms while dropping, closed the belt buckle (horrible task with 5mm gloves), slung the bungee, put on helmet and regulators and stopped at about 5,0m above 5,2m flat bottom.
'Ok' to the buddys and after about 20 meters I started putting on the fins, turned on the second valve and had to stop in the middle with one fin on my right foot to drop some sturgeon food in front of a waiting hungry mouth.
Untangling sturgeon food pouch and camera proved to difficult first, had to drop and catch the cam to save the food from getting lost early.
Next comes a small overhead part and I came to the thing I was really testing:
The light cable had wrapped around everything it could and I had clipped the bottom boltsnap through the loop.
Had to undo everything again to sort that out and accidentally (more like 'deliberate stupidity', was surprised when I realized I had though) dropped the light head through the bungee somehow.
So I unclipped everything on the left side again to get the light untangled after just about the whole 70m of overhead distance.
Had it ready in the helmet mount when reaching open water again. Backup light test replacing light test
Anyway: It could only be untangled by unclipping the sidemount bungee several times while swimming, would not have been easy to do with loops that would have entangled in exactly the same way.
Though this was only a 'stress test' I need that as practice for underwater work where I sometimes have to drop tanks or other important equipment and as a preparation for emergencies (and it's a lot of fun, of course).