I'm going to a Muay Thai gym soon. I'm a total beginner so I'll have to follow and trust blindly everything my instructor says. Since nobody is perfect and somebody may even be not prepared, I'm not so sure of this choice.
Are there some major and common flaws in teaching Muay Thai I can recognize to classify the guy as a bad teacher? And are there some concepts or things to teach that can tell me immediately that the teacher is good or even great?
Most of this advise is a sub-set of looking out for a Mc Dojop. I am going to assume that you are referring to technical knowledge instead of generic "should I train here" which has been answered here and here.
You could look at how many fighters went on winning tournaments within your gym? This can give you a clue as to how well people coming to train do. Although, this might be a false alarm is the gym is a fun place without pushing fighters. The class might still be really good. However, I would expect anyone teaching Muay Thai to have had a career as fighter (maybe just as an amateur) which you could check…
Note that you cannot tell if the technical knowledge is "correct" since you have no idea what Muay Thai correct is. However, use your common sense to determine if the techniques you were shown are practical. As a hint: the more complex the technique, the less practical it is.
