Before completing my GFPT, I had been taught only mid-field crosswind joins, that is, overhead joins. Inbound on my GFPT flight test, my assessor, who was not my instructor, asked me to join the circuit "downwind". Sudden panic! Thank goodness I remembered join angle etc. Ended up a tight circuit but bluffed my way through. I was mad that my instructor had never got me to perform any other type of join other than mid-field crosswind. Nowdays though, flying at a small country strip, I'll always join mid-field crosswind because, to me, it gives me a good view of the windsock/s and the strip and gives me a couple of minutes to settle into the circuit.