Yesterday, I ran the "World Famous Mud Run" and saw 3 people running in VFF's and one lady running barefoot. I briefly spoke to each of them and they loved thier VFF's and the lady running barefoot said it was her second Mud Run barefoot and loves it. I wish I could of weighed my shoes when I took them off because they were so caked with mud, filled with sand and soaking wet that I am sure they weighed several pounds each and I wished I was barefoot.