Marc (Jerseybigfoot) put tracks on his Copperhead Springer (Max II) . You never saw it, Nubs? I don't think he kept the tracks on, but he wanted to see if it would work & it did. Maybe someone can find it if it's on U-tube.
Put in Copperhead in the Woods in your search. We, also, found one on Lewis's vimeo of Busco Beach 2013 that WE never even saw. He went through stuff we could never test for.