I have decided to start doing the stronglifts 5X5 routine. My only issue with it is that he is very emphatic about not substituting Squats with a hacksquat machine or smith. Unfortunately I am pretty sure my gym does not have a powerack (there is a chance I could be wrong, there is a suspicious knob on the smith machine, and I have heard that some allowed the bar to be "uncoupled?"). So really my only option is doing the hack squats or using the smith, his steinberg lift alterntive is bloody scary to me, and a home gym is out of the question. What's my best alternative here?