I have been demoed a few of the real applications for the pinan katas by an 7th dan Shihan.

Its really nothing like what we are used to being taught and is VERY effective.

I havent managed to find any info on this even after many hours of reading and searching on the web. It seems like a very well kept secret.

Does anyone know of a good book explaining those techniques ?

I have already read the bubishi and okinawa tuite from Javier Martinez but covers only advanced katas that I will probably not learn in class.

I also read Karatedo kyohan which is basically a waste of time.

Thanks !