Well, reporting back as promised.
After 2 hours practice tonight, I am no better at the forward lemons and the backward lemons are just still impossible. I think there must be a fundemental flaw in my technique, even after watching the videos Derek mentioned. I shall try and get a bit of 1 to 1 at Mondays class. But hey, I can nearly do a one foot glide! I think I might be stuck on level 3 for several weeks

Its a shame we can't all get together on some ice!
Paul