My DD can be like a wet noodle at times. She has a hard time keeping her legs straight, wobbles a bit. She is VERY flexible.
Sometimes it clicks and her legs are straight and she is tight, usually not. She would do so well in meets if she could get this fixed. That is why she is doing L3 again this fall. She has all her L4 skills and is working on L5, but is trying to "pretty" things up.
I have taken pictures of her doing BWO's showing her that her legs are bent. She will look at the picture (digital camera) and then go try again - each time she thinks her legs are straight, I show her they are not.
Wish I had some advice, but at least you are not alone
