Martial Arts Roto - How to do it?


I’m testing Motor in the moment with a really tough scene. A guy is doing kicks and punches with turns. So, wow, there is everything in there to have a lot work. The Motor video on organic shapes is fairly easy compared to my footage.

It’s the first time, that I’m doing a complex roto like that.
Has anyone a good suggestion on how to start. I already did the torso and the head and I had to set a lot of keys. Especially the torso was nearly frame by frame work.

I’m using masks for the head, torso, upper arm, forearm, leg. 8 masks at all!

Thanks for any help.