scratch the breeze block suggestion. Hows about climbing a lot...on pinches.
With no idea what it looks like a quick (<-- clicky for more possible hits ) led to this potentially useful reference.
I would have maybe got 1-2 easier ones so you can warm up before playing with the harder COC?
thanks for the comments. i went ahead and purchased a CoC No1 which i cannot close. So now i have a measureable goal to achieve its time to train. Incidentally the package said i was supposed to get a small training booklet with it. Which was obviously missing , anyone got an online copy of booklet or similar? Cheerstim