For some the squat is natural and easy. For many its a nightmare. Whilst its possible for utter weakness and inflexibility to be an issue, in my clincal judgement, failure to master balance is the normal cause of a poor squat.
Here are my solutions for poor balance. Ive seen these drills work straight away or fix appalling squats in four or five self practice sesssions of 10 minutes.
Really worth while doing
If you need squat help, be it balance or mobility based, or an effective strengthening regime, drop me an email at Andrew@crossfitlondonuk.com and we will fix up a time for a Pt session (normally £50 in Bethnal Green or £70 in the City).