Master Yang has alot of Pm. I have trained 7* ba bu Shuai shou mei hua, and through Master Sun De Yao (and company from Qing Dao) Tai ji mei Hua and six harmony (although the last one i have done very little do to its softness and my decidedly Baji flavor). The Wutang Greats Like Master Yang Wong Ma Su Tsou Hsu, Findley etc etc. all have a large compliment of Pm and tend to teach toward the Students Ability. (at least as far as i have seen). These men teach what they feel is right in most cases. For example Master Yang has said many times that & star is great for a little guy (me) so i got a huge compliment of these techniques and applications. However he feels you should speak them all so i learned others as well. According to him in my memory Shaui Shou is out of the 7* Format originally. the modifications came out of the fast flowing attacks of 7*.
Remember though this school (Wutang/ tan) is huge, and there are alot of different takes but they all meet the minds on many issues which even today causes the meeting of the minds on many different issues. To me, it is amazing that these men can work as well together as they do. Gm Liu must have been quite the man to attract such quality characters.