Christopher D.wrote a review of The North Face Rock 32 Footprint on October 14, 2012
Familiarity: I've used it once or twice and have initial impressions
The Rock 32 footprint is light weight and compact. However, it doesn't cover the vestibules. If you're concerned about size and weight, use it. If size and weight aren't a concern I'd say use a tarp large enough to cover the vestibule floors.