Hi my friend,
Long time no chat. I hope you are well.
Here are my thoughts on the question you posed. I haven't done blindfold scenes but I do absolutely love glory holes so maybe my comments might apply.
Although I love seeing a cock coming through a glory hole and proceeding to suck it to full hardness, the real thrill is standing up, turning around, and backing onto that cock. In fact, if the video booth or room is dark, so much the better. My mind races with the thoughts of what I could not see about this guy's cock - any signs of STDs that I might have missed, etc. And yes, I hope I did *not* notice anything and so (possibly) some infected cock is now going get me raw (I have a small tight body - even a smaller cock will stretch me and make me bleed a bit) and whatever this guy pumps into me is going to have easy access to my body.
I do love anon sex!
Be well,
J.