The whole point of my comment was that disc attitude is a poor guide to best auto speed and whilst showing it to a student may help them understand why best auto speed is what it is, it doesn't help much when flying autos since the ASI is the more accurate guide.
totally agree, I don't know where this disc bulloney crept in.
The only time I refer in training to the disc is when doing confined area take offs.
attitude to me is only the airframe attitude to the horizon, and the slave's attitude to the bartender!
The only other time that I look at the disc is when I am checking that is still in track. Mind you that's a fairly regular thing with me.
looking at the disc when going into auto is a totally backward step, away from the "picture." time - waste- potential for trouble- etc.