I don't have a pic of that session. It was over 10 years ago. 
I tried your suggestion re the position and yes. It's hard on the legs.Obviously better with your head supported to a certain extent but still hard. I would think 30 minutes feel like 30 hours.
You're correct thinking about that position I mentioned, it is a variation of yours just the rod linked to the collar and not a hood. Had the effect of keeping my head up - sort of looking ahead rather than allowing it to droop at all. I suppose the reason I was standing was to allow greater access, although your sub's ass is not exactly hidden.:) Wasn't my idea as you can imagine, I just went along with it, you might say.
