I teach CK concepts from day one, so I start it between SLT and CK, but sometimes it depends on the student. I will teach a panting puppy that has already purchased a Jong, the closing set early on.. as this move is in all 11 of our sets, and it takes more than a little practice to get it down correctly.
What was passed down to me was, most WC concepts are found in the 1st set. Perhaps this is why Ip taught everyone who reached that point, the first set himself?
As for the 3 forms. Teaching WC today is different than the 60's, and it appears Ip didn't teach Bil Jee to very many students.. as in just a handful. Here is a back story, agree with it or not. I was around, and active in the MA world at the time Ip Man died. The Bruce Lee phenomenon was getting up steam when he died, and people were just learning who IM was.. then he died a year later. You'd have to be Helen Keller [Google her -lol ] not to know that there was lots of money to be made riding BL's coattails. Behind the scenes, Who was going to be Ip Man's successor, was being hotly debated by many. [still is!]
The Oriental way is, 'stay in the family', but after re-uniting, only one son trained hard, and he hadn't the years and knowledge of others. Another opportunist, a lo-fan no less [who wasn't a direct student, but claimed he was] said Ip told Him on his deathbed, that He was successor.. and that guy hooked up with Ip's other son. Then, people began copy-writing names.. WC, VT, WT, VC, etc. [THAT'S why those exist], for their business names. It became a poo-storm!
Then.. a longtime student living in Australia wrote an open letter to the others, stating that while living with Ip Man, during the last two years of his living in Hong Kong, He and only he, was taught the secrets of dim-mak within the 3rd form, and He and only he was the real successor. Well, all hell broke lose. He was disavowed, with almost everyone claiming he was just a part time student, just mainly hanging around and no one remembered. Especially hostile was the lo-fan.
That student in Australia's reply is what I still find interesting. After reproving the lo-fan by telling him he was still in diapers when he was training with IM, he claimed no one on the panel knew the 3rd form? He also said if they disputed him to let him know and he would fly out to Hong Kong and kick all their as*es. They didn't reply. [-I have a copy of both the HK reply and his response] He also made an 8mm film of BJ, out of order, that was sent with his last reply. [Although someone put it in order, both can be seen on YT]
Now, today I know at least one person on that panel also knew BJ, as well as another, elsewhere. I just find that comment from the early 70's, fascinating, in that it wasn't disputed. [no, I don't advocate his lineage] Today, anyone can find a third form or a Knife form on YT. This may also be why Ip only made reference to the first two forms, and why a lot of weirdness regarding the 3rd?
Anyway, hope it wasn't boring. Another cool WC story.
Also, Bruce Lee stated, most of Muk Jong teaching was before Chum Kil. 'Tiger and the Dragon' -Campbell