I don't get to do squats very often.
I had back surgery and although you would think I am back to normal, it likes to creep up and knock me out...
I was making huge gains on squats when working with Phil, when I started I was squatting 250 for 8 reps, after about 5 month I was up to 325 for 8 reps.
One day when I was squatting and feeling like a beast, I did my drop from 325 for 8 first set, to 285 for 8, this time I was feeling really good though and went for the 9th rep and then the back just does its little thing. A slight "pinch" in the lumbar region and my entire body turns into jello and went crashing down (I only squat in safety rack so I was ok but it took about 2 months to recover from the minor back injury here).
So I am pretty much sticking to leg press now.
I was getting up really high in weights a few weeks back on 2 leg leg press and it was starting to tweak the back again (got 10 plates for 10 reps) so I am now doing 1 leg (leg press) to knock the weights lower and save the back.
Last leg day looked something like this
1 leg legpress, 3 plates per side for 10 reps per foot
2 leg legpress, 8 plates per side for 12 reps (high foot shoulder width)
2 leg legpress, 8 plates per side for 5 reps (mid foot shoulder width)
Trust me I REALLY wish I could squat. I swear those 3 sets of hell under the squat bar, will get the blood going more than any hardcore cardio session. I love how after my first set I would be dripping in sweat, by the end of the 3rd I would have a puddle
I am going to start trying to implement the squats back into my training again but it will be after a few sets of leg press so that I can't push the heavy weight and hopefully save the back...
As to my stance
Squatting I use a really wide with toes pointed out (powerlift) stance
Leg press I very my stance
High foot Shoulder width
Mid foot shoulder width
Mid foot close stance (almost touching feet).
I make sure my toes are pointed straight or just a very slight angle out, nothing drastic like my squat