Hi BigJon,
Very Good Pictures and Description mate! Very helpful!!
I start a 5 Day W+D course tommorow With Wallace Training in Battersea, south london with Test on the 5th Day. I did the Assessment A month ago, also Had a little session on the couple/uncouple and reverse and Enjoyed it. Have been used to reversing trailers For a few years now, obviously not as long as W+D, but its pretty much the same idea. Look forward to seeing how you get on Mate!