User blog comment:D.Dragon123/Why Haoshoku haki is useless./@comment-5962458-20130114225530/@comment-5387880-20130115210408

Vazelos3 (panatha re;)) I believe sewil is right  Coby was knocked unconicious because he was afraid that he would die but u have a point as well so it could be both.

DP Shanks can control it. Look at 2:13> http://www.youtube.com/watch?v=JinLzivewhQ