I think that with any of the top instructors you need enough experience to be able to grasp what is being taught but not so many bad habits that you have to unlearn them before you start. Kay teaches his style and builds on fundamentals instead of some instructors who adapt your style with suggested improvements.
Mike said it best!!! Kay's class is GREAT!!! I will tell you he can be a little crass, that's just him, I had no problem with it. He is a great teacher and you will suprised at what you can learn IF you are willing to change. Some things I did change, some I did not. Take his class and others and you can and will learn!!!
Kay offers excellent classes and I believe a new shooter would actually gain more from a class than an experienced shooter. A new shooter just has to learn how to do things right. An experienced shooter has to unlearn his mistakes first and then learn how to do things right.
Also, a new shooter might have more questions, and the entire class can benefit from the questions.
Think about it this way when deciding on a clinic or not:even Tiger Woods has a coach. Kay is a great teacher and does not hold anything back as some might think and he does want to see you on the line at shoot offs, your success is his reward and best advertisement. A new shooter is not going to learn or understand at the same level as a experienced shooter. Don't expect to take one class from Kay or anyone else and expect to learn everything but it will help start you in the right direction for a successful trap shooting career. Frank