Personally i think if people are still on the start(ish) of the learning curve then the aim should be to complete 5 minute runs without crashing. Then as the saying goes practice, practice, practice, practice, practice..
I think harder tracks are better for your driving as the only way to improve is to do something you're not as good at.. Worksop being a great example. Watching other top drivers is always a good one too but can be tricky to emulate :s !
Broadly speaking being good at tenth off-road will make you pretty good at most other classes..
Just my thoughts
