My first jet was the BAC1-11 and following the advice of an old but not bold pilot I always had a copy of that page of the ops manual that showed the table for flight with unreliable airspeed on my clipboard. Carried it through until my final flight on the -400 and because I looked at it fairly often, it being constantly 'in view', I subconsciously committed just a few of the speed, body angle and power settings to memory, it can't hurt.
I still maintain that a large part of the current problem with automation is that it is not taught and practiced sufficiently to the point that pilots are competent and confident to utilise the automation throughout its envelope; that is a management and training issue and in almost every case will come back to a budget issue.