MMMmmm. In relation to the 1st link on youtube below I emailed an instructor on a Wing chun web site who is skilled in distance learning. I did this to see what he would say about the 116 movements and how he interpreted it.
He didnt agree with the way the criticisms were formed but there were some grains of truth he felt.
I re-looked myself and yes its not perfect: he does seem to lean in for the butterfuly hands - but I see instructional DVDs 'masters' doing that too - he he isnt alone. He thought too there should be power in the strikes. (I thought the sharp clacks = power ?!). Also power on the dummy may not always be the aim *IF* the user is biasing positional skill - I think - for what thats worth. (This is all open to interpretation).
I re-looked at his feet and he may be on his toes for pivoting.
The point of this isn't the practitioners skill - its the use of the internet to share and understand and provoke *useful* criticism. Between the Martial Artist putting up the digitised video, the comments of the youtube 'community, my questioning and reply, posting to another blog to another head instructor and re-watching a circuit of knowledge is reinforced for me.
In other words some new understanding was given to me. I could try and contact the original martial artist and quiz him - that would too give more learning. Don't know how he'd respond though. maybe he would say - yes - I have modified my approach. Thanks very much. Or he could say we are taught to pivot this way because ... let me show you why in this technique ...
I will say it now I am not that good myself on the dummy. I would get slated if I put a video of myself up on youtube - probably rightfully so in some phases of the moves I do. But its worth noting if you look carefully on instructional tapes etc. you do see inconsistencies by 'masters' in their own forms - ie it can be asymmetric sometimes; some moves omitted on one side not another, ad hoc moves inserted. I don't find this a big deal BUT for those who really want to pick hairs be aware of this there is no such thing as perfection in use of the dummy even when doing prescribed forms.