You did well to listen to your instructors instead of some of the netsperts on here who would be better off increasing their diving score instead of their posting score in order to know what they're talking about.
The only reason to have a 5' or 7' hose wrapped around your neck (....for you anal retentives, I know how it is wrapped but am just too lazy to write the full details ) is if you do extreme penetration diving where you may have to pass your rig through an opening and then follow it through and re-attach. (not recommended as it usually just gets you into more trouble than you are ready for)
IF and WHEN you ever have an OOA situation, the likely scenario is going to be that the recipient is going to rip the reg out of your mouth without asking or go for your occy with the same determination.
The best way to prevent this kind of thing happening is to dive with buddies that know how to read an spg.....frequently!!!!
Either way, when an OOA or LOA situation happens, THE DIVE IS OVER FOLKS and you need to make a controlled ascent to the surface which is best done with the recipient close to you with you controlling the buoyancy for both of you......stop fantasising that the recipient can comfortably follow a couple of feet behind you on your 7' hose.
In my 40 + years of diving I have only ever come across 2 LOA situations, one of which was predictable as the person was diving considerably deeper than the rest of us and got low whilst doing deco. The other was an equipment issue toward the end of a dive and no 7 footer required.
If you feel the need to look the part and create a bit of extra drag and a snag point, don't let me talk you out of it, besides that, it is also a good indicator of who I don't want to dive with unless you're in a cave or real wreck.