Fishes, please help this flounder (swim video critique) (Page 2)

As others have said midline, elbows and low hips. Poor body position is you biggest issue. Try 25s with a pull our between your ankles... it will force you to engage your core, then try to mimic that feeling while you are swimming without it... watch how high my hips are in this 200 ...

https://www.youtube.com/watch?v=UREFVv7yHzU&feature=youtube_gdata_player

Great threa, it's given me a few things to try in the morning swim.