You need 522.7 haste rating to get soft capped, without glyph or points in IAotH and this value is listed on the first post of this topic, the Holy Bible for Sv hunters.
Also take a look on post #59 of this same topic.
Of course iI looked at the first page and of course I know what the soft cap is. But my question had nothing to do with that, I wanted to know when i could spec out of 1/14/56 and into 1/15/56 and not see a dps decrease due to too little haste. Not what the soft cap was.