I am always trying to figure out how bent my knee should be in attitude. I have finally figured it out.
First, put your feet in coupe (front or back). Now, keeping your knee bent at the same angle, take it up to attitude. There! A perfectly bent knee.
Quick tip: When is attitude back, remember to keep your leg turned out. Imagine your knee above your foot. Reverse for front; imagine your foot above your knee.
