stopped this morning on way to work to finish a quick tree job. Loaded what brush left on 16 ft trailer then used a 3/4 ton crew cab ford and chain over a limb to pick up 3 ft round tree root and a 5 ft round tree root. when took trailer off truck at plant this afternoon the trailer jumped up lil bit and into tailgate of truck, scratchin it no biggie, pulled forward and trailer kept right along with me, thought might a forgot safety chains so stopped, trailer kept coming as it was rolling into a rut and wham right in to tailgate HARD!! needless to say hmmmm no openiey the tailgate no more!!!