with softcloth - the concept is very simple - i'll try and explain it in a paragraph, from your other posts you sound experienced, so this may work ( for now till a video is made )
attach hair prop to avatar. enable your avatar to do collision. ( button on the panel, you enable the bones ) - Then enable the hair prop to be soft cloth enabled. From there it will ask you for a weight map - now with weight maps, if you pulled your model into sculptris and manually painted a texture - everything you paint black isn't affected by the soft cloth physics, everything white is max - everything in between are shades of gray. The very top of your avatars head would be black, then just below the temples, would start fading to a lighter gray. In the panel itself, there are a bunch of presets for hair - wavy, curly, long etc ....select the most appropriate one for the hair style you are using, and it will auto tweak the settings below those options. - basically on the weightmap, you can use the black color strategically to pin your prop.
there are other ways to achieve this with bones and springs as well, but the above technique is the latest one trending. :D
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