@CraigKirik, We do a lot of past papers regularly, probably 3 per week (one every lesson). I agree wholly but the paper has 3 sections, A, B and C. B I can do relatively quickly everytime, but A is only 1 question and C is only 2 questions so obviously not much to skip ahead and do other questions and come back to the harder questions because if I do it'd be harder to get higher marks.
My logic may be flawed in this comment but as said, I'm half asleep