LF,
As you suggest I have been taught both glide approaches and forced landings, just not in direct relation to the final minute of flight. I'm thinking it would make sense to look at the final approach and if there isn't a convinient field make the approach a bit steeper to give a better chance of gliding in. I've never seen that in a manual. I'll leave the exciting twin engine stuff to the more experienced pilots for now.
Regards
D