I'm a bit lost on the Rack DL. The book says to use a rack that's just below the knee, but my gym's rack positions were either halfway up my shin or just above my knee. I ended up using the above the knee position as I thought the lower position would make it more like a Romanian DL, but I'm not sure I was getting a decent extension.
What's the goal of this exercise, extension-wise? Should it be more like a Romanian DL with dead stops, or with less ROM?