Hi Guys thanks for the quick replies - I now have a ski slope in the post and awaiting its arrival. Great stuff thanks for the leads.
Clive your picture reminds me of years ago riding home with a lady on the back - I hit a patch of black ice - the bike completed a couple of 360s and I held it upright, Not through skill, just pure luck. I shouted out to the lady, "that was exciting wasnt it", only then I realized she had dropped off on the first spin. I don't think she liked my attempts at ice dancing on a motorbike.