Creating a fast flip turn means submerging into the turn. Here's a quick trick that will help swimmers stay low and tight.
Why do it:
Tucking the head into the flip causes the body to flip faster. Keeping the feet low creates a tighter tuck. It all works together.
How to do it:
1 - Take a stretch cord and put it about 1-2 feet away from the wall.
2 - As the swimmers approach the wall, they'll need to make sure the head doesn't hit the cord on their way in.
3 - To keep the feet right, move the cord to about 8 inches away from the wall, and make sure the swimmer's feet don't touch the cord as they flip.
How to do it really well (the fine points):
This isn't really about WHERE you put the cord, and the cord is really irrelavant in this exercise. It's the thought that something is there that they have to "get under". Where you put it will be less important than giving them the thought process.
They WILL hit the cord when it's further away from the wall while focusing on tucking the head, but have them continue the turn and push off the wall... the cord will pop back up for the next swimmer.