in my opinion the I.P.A.F courses just arent thorough enough i had used cherrypickers for years without a licence having been taught by my dad, when it was necassary to get a licence i couldnt believe how much important info was left out, i think if somone was to hire a large machine with such minimum experience as got on the course then they would be an accident waiting to happen, so much for health and safety the courses need upgrading and more time given on gradients and surfaces being worked on at least this would be a start to reducing the risks.