Cockayne's trip is no longer a mandatory sending off as it is not deemed dangerous play, but I think he would have had a yellow card had the try not been scored.
As for Crookes, IMO never a red card but a yellow at worst, if it had have been one of the usual top 4 clubs it would have been on report and a penalty, Mciloram has form for violent behaviour and if he had a black and white or red and white shirt on he would spend more time at Red Hall than on the pitch, all this does is prove Pearson and Hudge were right.