So I got in the Smith Machine with 70lbs on, put my feet out in front of me and gave it a shot. My heels were about 12" out ahead of the bar so I was actually leaning against the bar to support myself. Seemed to hit the outside of my quads rather well. I guess this is actually similar to the hack squat sled where you're on a 45 and can more your feet out ahead.
JoBu