Personally, I think you BOTH (Derrick and rcfan) hit the nail on the head. I think you both are exactly right about how to train hurdlers, and your differences in opinion on certain topics is fine because it works for the particular hurdlers you have. I agree with every word of what you BOTH said. I have coached a 13.90 girl 100 hurdler, and a 40 second 300m girl hurdler (both high school seniors this year), as well as average hurdlers in the 15-16 second range and the 45-47 range and all needed different approaches to hurdle training.
I think you both know your stuff, and I look forward to the both of you producing excellent hurdlers in the coming years.