I need ramps made for my flatbed truck, but they gotta be 7 or 8 ft. long! I figure I'll be "bustin" a N** pulling them out of slots and puttin on back, HA! I'm gonna use them for the side boards too. I have frame rails from one of my Trucks and gonna add some wood (like 2 x 12) with 2x4 edges to them to drive on. don't know about being slippery tho. I saw some commercial alum ones over at yard, not for sale. They were like 16ft long, but light!