I try to point my toes out a little bit so that my knees track correctly. If you keep your toes straight forward, a lot of times your knees will tend to collapse in... upping your chance of injury big-time [and] when your knees collapse in your butt shoots back, which is going to make that bar go forward and change the balance which is going to make that thing feel about 20 times heavier than it actually is. So point your toes out people.