You know, I don't think I quite understood what Iwannacoach is saying above, even after watching my DD struggle for three years to master this skill, until I watched up close as my DS's talented young coach taught it to the boys on high bar this year. In part I think because he was a competitive gymnast not that long ago, he was both able to do the body shaping with them in slow motion through the skill repeatedly and talk them through it in a lot of detail.
I know it's easier for most boys than most girls because of the nature of the bar, but I still think the guy should get a lot of credit for now having a cohort of boys who've all just finished their first years at L5 after only one year at L4 who all have it (albeit some inconsistently).
At least the girls only have to kip on one event!