Hi Lettuce, thanks for the great report, there is nothing better than being taught by divers with loads more experience than you/me.
The video sounds brilliant, we all think we dive horizontally

we don't all get the chance to see we don't
I've tried the backwards kick several times after looking at the 5th dimension mini-video, with unimpressive results, any tips??
I am really pleased you enjoyed it, it's why we dive after all
Cheers, Malcolm.