I am genuinely surprised how many people do PFL's at an airfield.
I would normally use it to finish off a session of PFLs, or at the end of a nav for a student who hasn't done a PFL in a while, it really helps the student remember what they can and can't get away with, particularly mistakes like pulling flap too early and then falling short.
Nothing beats getting out and about, getting low over a field. Something that looks green and flat from 3000' looks lumpy, rutted and covered with telephone cables from 300', and students really need to learn this judgement of what would be a suitable site.
Did my first ever Practice PAN to D&D 121.50 yesterday
That's great, in the UK the guys at D&D really seem to appreciate it as it keeps their skills sharp too.