JB had me doing something similar - pushing it from the pins, a few weeks ago to finish off my quads, except I did a mortal weight load for tons of reps.
Also impressive there is a leg press sled out there that can hold 8 billion lbs.!
My Favorite Part Of Lifting Is Having The Opportunity
Meet PR's: (May 2014) Raw Natural
Squat 475 lbs
Bench: 286 lbs
Deadlift: 501 lbs
Total: 1262 lbs
Squat: 495 lbs
Bench: 300 lbs
Deadlift: 520 lbs/500X5
Total: 1315 Lbs