She did not explicitly say, but I can figure it out from what she did say:
1. you need some kick to keep your body from "fishtailing"
2. you don't want you legs causing drag and holding you back.
I used fins for the first time last night and they make a huge difference. It's almost impossible to kick wrong with them on. I've got a long way to go and lots of work to do on my breathing and endurance. As we agreed last night, I know how to swim but I'm not a swimmer ;)

