I have had great results with 20-rep squats. Though I didn't gain 30 lbs. in 6 week, I did raise my squat lifting poundage by 100 lbs in that time. If you follow the suggestion of choosing a weight you can squat to 10, then squat to 20, you WILL grow stronger. It worked for me. If you work really hard and lift in a gym, you will be viewed as a masochistic. Working that hard isn't pretty. Some on this list may not agree with me on 20-rep squats, but I'm just telling what worked for me. Also, perform 20-rep deads 3-4 days later.