So I've been squatting with a pretty wide stance thus far in my career because it's the only way I can squat with my particular flexibilities. It's been working as far as weightlifting, and in 9 months I progressed from no lower body training at all to squatting 405. However, I'm not lifting to just get the weight up, as noble a goal as that is. I'm lifting for increases in athletic performance. And recently I've felt a bit unstable on the inside of the knees (my stance and toe out is substantial) and noticed that my slewfoot (toe out) feels more pronounced. So to try and correct this, I want to work towards ankle flexibility and flexibility in general, of course. But I also want to narrow my squat stance and start using a 2x4 under my heels more often. I'm aiming for proper athletic development by putting the stress on my legs while they're more directly under my body, and developing muscle with my toes being further forward. So who has squatted with a 2x4? I know a lot of professional bodybuilders have done it. What are your thoughts? Any other tips on lifting to improve athletic development? Changes to make?