Not another embittered 5 year apprenticeship justifier.
Some people need years to learn a skill, as I imagine you did, others who are older with lots of life experience and practical skills can adapt these with the right training.
£175 @ 6 hours works out at £30 p.h. If you can't clear that sort of money in this area for instance, fitting 2 or 3 rads, then you are doing something wrong. Of course its not hour in hour out, day in day out. But still beats what I did before.
Tell me which aspect of plumbing takes years and years to learn, or which plumbing job needs to be repeated over and over again before it sinks in. Yes sometimes I do meet something above my experience, but knowing where to find the answer is important. Did your years of learning before you became profficient Mr Onlyfitideal boilers (Ideal - I hope not) mean that you are a slow learner?