Antonio, am I correct in saying that Mamede never did fundamental style workouts like Renato recommends, i.e. long fast runs of up to 30km? Will a FT reach their potential without a focus on such work?
Yes he didn´t. Most of his runs were just easy runs.
30kms lolng and fast seems to me too much for a beginner. But you can run fast runs as SPECIAL workouts. If you are a FT runner i advice you to take some short breaks of walk or easy jog during the long fast run.
I am a FT type and have been doing a Hadd-like base for the last 1.5 months, working toward running ~10 miles at about 89-90% max HR. I am progressing well. Would I do well to add 12x400 w/ 100m jog at this point if my peak race isn't until June?
Excuse me. John Hadd, when he was alive he told me several times that he didn´t agree with training heritage, or training disciples and in his opinion the training authorship dies with the coach autour. Therefore I don´t want to dismiss John Hadd and i wouldn´t advise you about John Hadd training.