I'd be interested to know what's happened to change your mind? Personally, I work coco as a hydroponic medium, ie) I provide consistent strength, nutrient solution at regular intervals and maintain a consistent level of moisture in the medium.

You can, if you wish, pretend that coco is soil and treat it more like a soil grow... it will still grow you some weed, but it wont yield nearly as much as it would under consistently applied hydroponic practices.