In answer to "Is Shotokan weak style?", I am not sure I completely agree with statements about "good" or "bad" schools. But I'd like to say "different". There have always been schools that deviate from the "norm". Some of these will gain acceptance, others will fail by being shunned or cast as unpopular. Even in Funakoshi's time he recognized that karate had "gone to the dogs" (my quote). And in that instance karate was just beginning in Japan. The establishment of "michi-dojos" or street schools where anyone including charlatans opened up a school to make a fast buck (well uhhh... yen) was a rampant problem back in the 1920's! Part of the problem is social, another is academic. The social end from a "traditional school" view is to remove any non-conformity. This in itself is a oxymoron as karate in the eyes traditional Japanese Koryu practitioners was certainly non-conformist! I hope you see the irony in this situation and find it as amusing as I do. From the academic standpoint Funakoshi's karate (Shotokan) was in its roots a rather brutal set of styles (Nahate and Shurite). However, I believe Funakoshi's aim was to civilize it and introduce it to the masses. This necessitated a certain "de-fanging" of the tiger (If you allow me the artistic license). I think Jiguro Kano (Judo's founder) had much influence in the concept of this adaptation. What realistically came about was in my view, three major Shotokan interpretations. The first was the Shotokai (under Shigeru Egami) which lead off on what I believe is the direction Funakoshi's vision saw. Whether they have continued that concept I can not say. My exposure to Master Egami was they are ultra hard core extremists with adaptability and change as their agenda. The Second is the JKA (under Nakayama) This was in my view to be the scientific approach to karatedo. From my exposure I'd say hard core people with the goal to popularize and to introduce more scientific (modern?) and sport aspects (seen as a necessary evil to popularize). And the third, The SKA (under Ohshima) who's initial ideas were to keep the "purity" of Funikoshi's teachings. That is to be the "benchmark" for other schools to look at and adapt and modify. To the best of my limited knowledge the three groups have kept to their ideals. What falls out from there is all the hybrid schools that take a bit of this and a bit of that. Are these schools "bad"? No, to me just different. As a result, anyone coming from what I identified as one or more of the three main interpretations (of which here in the US there are hundreds if not a thousand such schools) will see the "difference" in these non-conforming schools and may have nightmares because of it. Now schools with poor instructors or poor business practices, yes those are bad schools. But they can be found under most any rock and certainly not limited to any one style. They also are not new to this era, so the more things change, the more they stay the same.