I was asked to comment on the sequencing of a kick and its relationship to hip rotation in a recent thread. The person writing included a link to Grant Hackett (Olympic champion and world record holder in the 1500). I clicked onto the link and read a frame by frame analysis of Hackett's swim done by Emmit Hines who has been has written books on swimming and is a TI trained coach. Whenever Hackett lifted his head as part of his stroke Emmit Hines indicated it was an error based on his own coaching training. I thought that it might actually be a great innovation by a world class swimmer to create more power in his kick to increase hip rotation. The point being that every swimmer is unique and you cannot use a cookie cutter approach when coaching them. Hackett's head position did not fit into Emmit Hines' coaching book and therefore it was wrong according to Emmit Hines. Another coach might just marvel at how intuitive he was to instinctively alter his body position to gain propulsin.
When you pick a coach, ask about his philosophy. Does he/she have only one play book or he/she flexible in coaching style.
DougStern