I have seen both the good, bad, and the ugly when it comes to Cross Fit. I have personally concluded that the safety and effectiveness is determined by the experience and knowledge of the Cross Fit Personal Trainer and these trainers greatly vary in ability. Do you think the Cross Fit Certification is too lenient?
I want to echo the others. I have seen bad trainers with good certifications. I have even seen physical therapists acting as trainers and not being as safe as I think they should be.
We also have a flip side of participants who view themselves very differently from where they are and who will completely overestimate their abilities. Those will be the first ones getting hurt, and they would hurt themselves even in the presence of good instructors.
I like Noel’s comment about the beginner classes that had to be graduated from to qualify for a regular class. I have seen it in my MELT classes (which are about as far from CrossFit as it gets) when I wanted to implement an ‘advanced’ class which had the ‘basic’ class as a pre-req. People showed up for that and were mightily upset when I asked them to leave because they just knew that they were ready for ‘advanced’ no matter the class.