Whenever I am in half moon, I cannot hold for long because my hip socket in the standing leg pinches so badly and it really hurts. It is worse on the left than the right. It truly limits my ability to practice this pose. I have tried somethings over the years but have never been able to overcome this limitation.
I had a baby 5 months ago and I am rebuilding my strength and flexibility so this seems a good time to address this issue.
I have a similar pain in gomukhasana but not in other hip openers such as pigeon or thread the needle.