I just started lifting yesterday after about 10 months away from it (just transfered to a job that doesn't require 10 hour days 6-7 days a week). Today was leg day and I wanted to do squats on the rack, but some skinny geeky guy was squatting 100 lbs and resting 3 min between sets, lasted about 30 min, I didn't want to wait, other squat rack had 2 brolies. I used a machine like the below: My last set was 300lbs of plates - my legs are much stronger than my upper body - I fucking love leg day, but I feel like I cheated using this machine. My core is weak as fuck, so I know I couldn't have done that weight on a free bar. Out of curiosity - anyone know what the conversion would be? I'd like to know what to do on the next leg day if the squat rack is open. The leg workout was great - I've been walking funny since I left the gym, which to me is a sign of great success, but I would like to get the core workout as well. Thanks!