Where did HS learn the force flow skill set?
First, there is no evidence that Hendrik has learned or developed any 'skill set'.
a) Was it learned directly from his teacher? (If so where can we see other people with this skill (ie people that he didn't teach)? E.g. his teacher, older/younger kung fu brothers/sisters who learned from his teacher). Do you know what I mean?
b) Or, did he piece together these skill sets himself (and bring life to them) based on all of his research and making connections with other arts? I understand that the concept and terminology (as well as a manual of how to do it) of 'force flow' already existed as outlined in Kuen Kuits etc. Has he taken it upon himself to bring this back into wing chun.
Is it A or B?
Anyone who has been following this character for the past 5 years or so on KFO & many FB forums knows the answer is clearly B. The Cho family Hendrik learned his WC from have openly denounced Hendrik's conclusions that their WC=Snake+Crane. As well as his interpretations of their Kuits. As well as his ideas that their WC was missing much information (as HS puts it), along with these 'missing pieces' HS has tacked onto his 2-or-so years of learning from his Cho family Sifu. So it is clearly not A
As a side note since he was brought up, Sergio recently wrote a book about the stuff Hendrik is peddling/'taught him' - before Sergio even met Hendrik in person! How do you learn about and write a book on subject matter you've never even learned in person??
And Henrik's book costing close to $100 US (after he's repeatedly said for years that he has nothing to sell or gain from this information he's 'sharing'), it all smells of fishy marketing to me.