Kurt Wong is a wealth of information and, from what I have seen, a very good instructor. I have known Kurt for about 25 years, trained with him and visited his class on occasion. Beyond some bung bou training with him some years ago I have no real experience in northern mantis so I'm not qualified to judge the quality, but in general, his kung fu is of a high order. In addition to mantis he also teaches bajiquan, chen jia taijiquan, tan tui and longfist basics.
As for teaching style, he is traditional in manners but also congenial and very easy to talk to. In recent years Kurt has left most of the basic instruction duties to his senior students but is usually in attendance for the advanced classes and is sometimes available for seminars. The greater part of his training sessions is spent on basic exercises and sets, but with a strong emphasis on technique and power development. In other words, he uses the sets as training tools to develop technique and power rather than as an end goal in training. I haven't yet seen free sparring in his classes but I know that he has experience in it himself and may reserve it for interested students.
Wong Shifu is commendable for his constant questioning and searching deeply into the roots of kung fu training rather than being limited by the concept of style.
If you have any specific questions you can contact him through his website or feel free to pm me and I can call him.
Be well.
"Look, I'm only doing me job. I have to show you how to defend yourself against fresh fruit."
For it breeds great perfection, if the practise be harder then the use. Sir Francis Bacon
the world has a surplus of self centered sh1twh0res, so anyone who extends compassion to a stranger with sincerity is alright in my book. also people who fondle road kill. those guys is ok too. GunnedDownAtrocity