Hi Laura,
Like this ya mean?

Thanks to OldGeorge for the link that piccie come from.
http://www.netfit.co.uk/abdominals-web-site.htmI can see it won't hurt my back, which is great, and I agree it's certainly going to help the core muscle strength, I just wonder if it'll be enough for my needs. Even if not, if it's the only one that I can do, it's at least something
  Loz

if your neck won't stretch to see the sky,
be sure to stop and smell the flowers