one of the most difficult strokes to master yet a lot easier once you know how.
Jonathan Teaches regular Butterfly and Glide-Butterfly (see video). Many swimmers find Butterfly difficult to master, but with the right method and sequence of learning it is not as difficult as one might think.
Importance of the core
Stay close to the surface with a flatter position versus an up and down motion
Use the longest body line possible.
Dolphins at play on the surface of the water
Start the kick at the armpit/chest area and use body, not just the knees
develop focus on fast feet by kicking on back
Kick with face in using board ( breathe every 3-4 kicks )
Recommend fly with standard fins for young swimmers (not "zoomers")
Work on starting the breath on the entry of the hands, so that actual breath is
when hands are under chin and finishing when hands are ready to exit at the back
OBSERVATIONS & THOUGHTS
Use the body, not just the knees to kick.
Break the habit of big, slow kicking “Whale tales.”
Look up (and down) to breathe.
Don't Lift the elbows to start the recovery stroke, instead stay low and relaxed while finishing the stroke with the fingertips.