I don't race myself, never have, but I have two sons aged 8 & 11 from the Xbox generation who do. Like alot of kids they are impatient and naturally want to go fast and win, but I'm constantly telling them to go slower to go faster, let faster drivers past and be patient when overtaking. They are works-in-progress but we are getting there. I am not the only Dad either who encourages their budding Neil Cragg to do the right thing.
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Sadly it sounds like it's the 'big kids' who are letting themselves and the hobby down, and some of them take it way too seriously for what it is, a money-no-object attitude and tearing a strip off their kid when they don't perform as expected!
We are lucky to have Benfield buggy club near us and they have the right attitude with regards to the kids.