I think a lot of these huge circuits are flown by students (certainly in my experience at EGKA). Ultimatly they're learning just like we all were (and still are!). Give them some slack and let them learn. The art of a tight circuit was lost on me for lots of my training! Now I can fly a comfortable tight citcuit. The art of flying behind someone who isn't is the next thing to learn!! I was behind a guy last week, I thought he was going to have to contact Lydd his downwind was so wide!