When doing a flutter kick are you supposed to have you legs straight as much as you can or do you need to bend them in your knees just a bit.I know it should come from your hips but I was just wondering especially after practicing with a kick-board and noticing that I go faster when I bend my knees just a little bit so that your feet don't just move up and down but also kinda kick parellel to the water surface,
Thanks a lot.
