screwball: lowest chain setting i've used is 42" from ground to top of bar. i have filmed this. it's on my server. with a close stance this is a lot more lower back.
also, using bands makes the thing a struggle all the way through. when this meet is over, i am going to work on lowering the bar some more and use a lot more bands. i have to admit, the 815 was more of a confidence builder than real work as i am strong from that wide position.
t3c: yeah, im the bald guy. i have one box that is 12.25 in. we built it using 2x4's (2 is actually 1.75 if you meaure... dont know why they call it 2?).... but anyway... 2 vertical, then 2 horizontal, 7 rows up.
i use that to squat off of on speed day. it puts me sufficiently below parallel. My taller partners throw rubber mats on. We also built another box which has a piece at the bottom which can add 4" or so. we use these on some me days.
/irish