Personally I make sure the stude has had a few simulated failures downwind (as well as EFATO) before going solo, but wouldn't go through a full PFL trip. All I expect them to do is to hold a safe speed while setting-up a glide to the best available field and turning into wind if possible - I pre-brief the basics so that they understand the relevant issues but leave the PFL brief until it's rightful place in the syllabus.
HFD